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Finding the Fourth Proportional to 487,293.48, 730,755.90 and 206,942.76

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Solution

The fourth proportional to 487,293.48, 730,755.90 and 206,942.76 is: 310,335.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,293.48 : 730,755.90 = 206,942.76 : x
  2. Step 2: Convert to fraction form
    487,293.48/730,755.90 = 206,942.76/x
  3. Step 3: Cross multiply
    487,293.48x = 730,755.90 × 206,942.76
  4. Step 4: Simplify right side
    487,293.48x = 151,224,642,832.28
  5. Step 5: Solve for x
    x = 151,224,642,832.28/487,293.48
  6. Step 6: Final answer
    x = 310,335.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.