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Finding the Fourth Proportional to 438,416.10, 657,624.15 and 202,220.10

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Solution

The fourth proportional to 438,416.10, 657,624.15 and 202,220.10 is: 303,330.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,416.10 : 657,624.15 = 202,220.10 : x
  2. Step 2: Convert to fraction form
    438,416.10/657,624.15 = 202,220.10/x
  3. Step 3: Cross multiply
    438,416.10x = 657,624.15 × 202,220.10
  4. Step 4: Simplify right side
    438,416.10x = 132,984,821,375.42
  5. Step 5: Solve for x
    x = 132,984,821,375.42/438,416.10
  6. Step 6: Final answer
    x = 303,330.15

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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.