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Finding the Fourth Proportional to 445,527.60, 668,320.52 and 129,958

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Solution

The fourth proportional to 445,527.60, 668,320.52 and 129,958 is: 194,945.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,527.60 : 668,320.52 = 129,958 : x
  2. Step 2: Convert to fraction form
    445,527.60/668,320.52 = 129,958/x
  3. Step 3: Cross multiply
    445,527.60x = 668,320.52 × 129,958
  4. Step 4: Simplify right side
    445,527.60x = 86,853,598,138.16
  5. Step 5: Solve for x
    x = 86,853,598,138.16/445,527.60
  6. Step 6: Final answer
    x = 194,945.49

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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.