Home / 399,422.34-551,180.25-238,459.14

Finding the Fourth Proportional to 399,422.34, 551,180.25 and 238,459.14

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Solution

The fourth proportional to 399,422.34, 551,180.25 and 238,459.14 is: 329,060.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,422.34 : 551,180.25 = 238,459.14 : x
  2. Step 2: Convert to fraction form
    399,422.34/551,180.25 = 238,459.14/x
  3. Step 3: Cross multiply
    399,422.34x = 551,180.25 × 238,459.14
  4. Step 4: Simplify right side
    399,422.34x = 131,433,968,399.99
  5. Step 5: Solve for x
    x = 131,433,968,399.99/399,422.34
  6. Step 6: Final answer
    x = 329,060.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.