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Finding the Fourth Proportional to 445,503.50, 668,244.21 and 129,963.14

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Solution

The fourth proportional to 445,503.50, 668,244.21 and 129,963.14 is: 194,941.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,503.50 : 668,244.21 = 129,963.14 : x
  2. Step 2: Convert to fraction form
    445,503.50/668,244.21 = 129,963.14/x
  3. Step 3: Cross multiply
    445,503.50x = 668,244.21 × 129,963.14
  4. Step 4: Simplify right side
    445,503.50x = 86,847,115,818.42
  5. Step 5: Solve for x
    x = 86,847,115,818.42/445,503.50
  6. Step 6: Final answer
    x = 194,941.49

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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.