Home / 658,220.10-987,330.15-214,988.10

Finding the Fourth Proportional to 658,220.10, 987,330.15 and 214,988.10

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Solution

The fourth proportional to 658,220.10, 987,330.15 and 214,988.10 is: 322,482.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,220.10 : 987,330.15 = 214,988.10 : x
  2. Step 2: Convert to fraction form
    658,220.10/987,330.15 = 214,988.10/x
  3. Step 3: Cross multiply
    658,220.10x = 987,330.15 × 214,988.10
  4. Step 4: Simplify right side
    658,220.10x = 212,264,233,021.22
  5. Step 5: Solve for x
    x = 212,264,233,021.22/658,220.10
  6. Step 6: Final answer
    x = 322,482.15

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.