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Finding the Fourth Proportional to 529,158.86, 730,244.67 and 287,446.22

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Solution

The fourth proportional to 529,158.86, 730,244.67 and 287,446.22 is: 396,678.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,158.86 : 730,244.67 = 287,446.22 : x
  2. Step 2: Convert to fraction form
    529,158.86/730,244.67 = 287,446.22/x
  3. Step 3: Cross multiply
    529,158.86x = 730,244.67 × 287,446.22
  4. Step 4: Simplify right side
    529,158.86x = 209,906,070,066.65
  5. Step 5: Solve for x
    x = 209,906,070,066.65/529,158.86
  6. Step 6: Final answer
    x = 396,678.74

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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.