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Finding the Fourth Proportional to 330,270,715.20, 495,406,072.80 and 100,239,430.80

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Solution

The fourth proportional to 330,270,715.20, 495,406,072.80 and 100,239,430.80 is: 150,359,146.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,270,715.20 : 495,406,072.80 = 100,239,430.80 : x
  2. Step 2: Convert to fraction form
    330,270,715.20/495,406,072.80 = 100,239,430.80/x
  3. Step 3: Cross multiply
    330,270,715.20x = 495,406,072.80 × 100,239,430.80
  4. Step 4: Simplify right side
    330,270,715.20x = 49,659,222,752,335,360
  5. Step 5: Solve for x
    x = 49,659,222,752,335,360/330,270,715.20
  6. Step 6: Final answer
    x = 150,359,146.20

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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.