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Finding the Fourth Proportional to 529,549.96, 730,779.88 and 287,831.88

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Solution

The fourth proportional to 529,549.96, 730,779.88 and 287,831.88 is: 397,208.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,549.96 : 730,779.88 = 287,831.88 : x
  2. Step 2: Convert to fraction form
    529,549.96/730,779.88 = 287,831.88/x
  3. Step 3: Cross multiply
    529,549.96x = 730,779.88 × 287,831.88
  4. Step 4: Simplify right side
    529,549.96x = 210,341,746,726.57
  5. Step 5: Solve for x
    x = 210,341,746,726.57/529,549.96
  6. Step 6: Final answer
    x = 397,208.50

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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.