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Finding the Fourth Proportional to 345,470.66, 518,101.36 and 120,789.22

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Solution

The fourth proportional to 345,470.66, 518,101.36 and 120,789.22 is: 181,147.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,470.66 : 518,101.36 = 120,789.22 : x
  2. Step 2: Convert to fraction form
    345,470.66/518,101.36 = 120,789.22/x
  3. Step 3: Cross multiply
    345,470.66x = 518,101.36 × 120,789.22
  4. Step 4: Simplify right side
    345,470.66x = 62,581,059,155.34
  5. Step 5: Solve for x
    x = 62,581,059,155.34/345,470.66
  6. Step 6: Final answer
    x = 181,147.25

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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.