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Finding the Fourth Proportional to 529,212.06, 730,318.88 and 287,498.45

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Solution

The fourth proportional to 529,212.06, 730,318.88 and 287,498.45 is: 396,751.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,212.06 : 730,318.88 = 287,498.45 : x
  2. Step 2: Convert to fraction form
    529,212.06/730,318.88 = 287,498.45/x
  3. Step 3: Cross multiply
    529,212.06x = 730,318.88 × 287,498.45
  4. Step 4: Simplify right side
    529,212.06x = 209,965,548,550.28
  5. Step 5: Solve for x
    x = 209,965,548,550.28/529,212.06
  6. Step 6: Final answer
    x = 396,751.25

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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.