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Finding the Fourth Proportional to 529,088.83, 730,147.89 and 287,376.13

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Solution

The fourth proportional to 529,088.83, 730,147.89 and 287,376.13 is: 396,581.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,088.83 : 730,147.89 = 287,376.13 : x
  2. Step 2: Convert to fraction form
    529,088.83/730,147.89 = 287,376.13/x
  3. Step 3: Cross multiply
    529,088.83x = 730,147.89 × 287,376.13
  4. Step 4: Simplify right side
    529,088.83x = 209,827,074,955.87
  5. Step 5: Solve for x
    x = 209,827,074,955.87/529,088.83
  6. Step 6: Final answer
    x = 396,581.94

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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.