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Finding the Fourth Proportional to 485,062.16, 727,559.32 and 181,398.56

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Solution

The fourth proportional to 485,062.16, 727,559.32 and 181,398.56 is: 272,085.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,062.16 : 727,559.32 = 181,398.56 : x
  2. Step 2: Convert to fraction form
    485,062.16/727,559.32 = 181,398.56/x
  3. Step 3: Cross multiply
    485,062.16x = 727,559.32 × 181,398.56
  4. Step 4: Simplify right side
    485,062.16x = 131,978,212,962.58
  5. Step 5: Solve for x
    x = 131,978,212,962.58/485,062.16
  6. Step 6: Final answer
    x = 272,085.15

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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.