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Finding the Fourth Proportional to 529,551.40, 730,781.86 and 287,833.32

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Solution

The fourth proportional to 529,551.40, 730,781.86 and 287,833.32 is: 397,210.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,551.40 : 730,781.86 = 287,833.32 : x
  2. Step 2: Convert to fraction form
    529,551.40/730,781.86 = 287,833.32/x
  3. Step 3: Cross multiply
    529,551.40x = 730,781.86 × 287,833.32
  4. Step 4: Simplify right side
    529,551.40x = 210,343,365,305.67
  5. Step 5: Solve for x
    x = 210,343,365,305.67/529,551.40
  6. Step 6: Final answer
    x = 397,210.48

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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.