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Finding the Fourth Proportional to 415,328.96, 573,402.96 and 272,338.40

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Solution

The fourth proportional to 415,328.96, 573,402.96 and 272,338.40 is: 375,990.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,328.96 : 573,402.96 = 272,338.40 : x
  2. Step 2: Convert to fraction form
    415,328.96/573,402.96 = 272,338.40/x
  3. Step 3: Cross multiply
    415,328.96x = 573,402.96 × 272,338.40
  4. Step 4: Simplify right side
    415,328.96x = 156,159,644,681.66
  5. Step 5: Solve for x
    x = 156,159,644,681.66/415,328.96
  6. Step 6: Final answer
    x = 375,990.26

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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.