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Finding the Fourth Proportional to 529,055.45, 730,101.87 and 287,342.74

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Solution

The fourth proportional to 529,055.45, 730,101.87 and 287,342.74 is: 396,535.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,055.45 : 730,101.87 = 287,342.74 : x
  2. Step 2: Convert to fraction form
    529,055.45/730,101.87 = 287,342.74/x
  3. Step 3: Cross multiply
    529,055.45x = 730,101.87 × 287,342.74
  4. Step 4: Simplify right side
    529,055.45x = 209,789,472,717.55
  5. Step 5: Solve for x
    x = 209,789,472,717.55/529,055.45
  6. Step 6: Final answer
    x = 396,535.89

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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.