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Finding the Fourth Proportional to 560,028.74, 840,046.15 and 139,304.62

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Solution

The fourth proportional to 560,028.74, 840,046.15 and 139,304.62 is: 208,957.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,028.74 : 840,046.15 = 139,304.62 : x
  2. Step 2: Convert to fraction form
    560,028.74/840,046.15 = 139,304.62/x
  3. Step 3: Cross multiply
    560,028.74x = 840,046.15 × 139,304.62
  4. Step 4: Simplify right side
    560,028.74x = 117,022,309,708.21
  5. Step 5: Solve for x
    x = 117,022,309,708.21/560,028.74
  6. Step 6: Final answer
    x = 208,957.69

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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.