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Finding the Fourth Proportional to 440,349,143.60, 660,523,715.40 and 133,640,764.40

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Solution

The fourth proportional to 440,349,143.60, 660,523,715.40 and 133,640,764.40 is: 200,461,146.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,349,143.60 : 660,523,715.40 = 133,640,764.40 : x
  2. Step 2: Convert to fraction form
    440,349,143.60/660,523,715.40 = 133,640,764.40/x
  3. Step 3: Cross multiply
    440,349,143.60x = 660,523,715.40 × 133,640,764.40
  4. Step 4: Simplify right side
    440,349,143.60x = 88,272,894,230,384,048
  5. Step 5: Solve for x
    x = 88,272,894,230,384,048/440,349,143.60
  6. Step 6: Final answer
    x = 200,461,146.60

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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.