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Finding the Fourth Proportional to 529,362.66, 730,525.10 and 287,645.22

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Solution

The fourth proportional to 529,362.66, 730,525.10 and 287,645.22 is: 396,952.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,362.66 : 730,525.10 = 287,645.22 : x
  2. Step 2: Convert to fraction form
    529,362.66/730,525.10 = 287,645.22/x
  3. Step 3: Cross multiply
    529,362.66x = 730,525.10 × 287,645.22
  4. Step 4: Simplify right side
    529,362.66x = 210,132,053,105.02
  5. Step 5: Solve for x
    x = 210,132,053,105.02/529,362.66
  6. Step 6: Final answer
    x = 396,952.92

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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.