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Finding the Fourth Proportional to 445,491.27, 668,182.62 and 129,948.48

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Solution

The fourth proportional to 445,491.27, 668,182.62 and 129,948.48 is: 194,906.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,491.27 : 668,182.62 = 129,948.48 : x
  2. Step 2: Convert to fraction form
    445,491.27/668,182.62 = 129,948.48/x
  3. Step 3: Cross multiply
    445,491.27x = 668,182.62 × 129,948.48
  4. Step 4: Simplify right side
    445,491.27x = 86,829,315,831.42
  5. Step 5: Solve for x
    x = 86,829,315,831.42/445,491.27
  6. Step 6: Final answer
    x = 194,906.89

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1.5x scale

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.