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Finding the Fourth Proportional to 529,203.91, 730,307.61 and 287,490.29

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Solution

The fourth proportional to 529,203.91, 730,307.61 and 287,490.29 is: 396,739.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,203.91 : 730,307.61 = 287,490.29 : x
  2. Step 2: Convert to fraction form
    529,203.91/730,307.61 = 287,490.29/x
  3. Step 3: Cross multiply
    529,203.91x = 730,307.61 × 287,490.29
  4. Step 4: Simplify right side
    529,203.91x = 209,956,343,777.71
  5. Step 5: Solve for x
    x = 209,956,343,777.71/529,203.91
  6. Step 6: Final answer
    x = 396,739.97

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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.