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Finding the Fourth Proportional to 445,475.79, 668,246.49 and 129,941.10

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Solution

The fourth proportional to 445,475.79, 668,246.49 and 129,941.10 is: 194,921.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,475.79 : 668,246.49 = 129,941.10 : x
  2. Step 2: Convert to fraction form
    445,475.79/668,246.49 = 129,941.10/x
  3. Step 3: Cross multiply
    445,475.79x = 668,246.49 × 129,941.10
  4. Step 4: Simplify right side
    445,475.79x = 86,832,683,981.74
  5. Step 5: Solve for x
    x = 86,832,683,981.74/445,475.79
  6. Step 6: Final answer
    x = 194,921.22

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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.