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Finding the Fourth Proportional to 271,152,004.70, 406,728,007.05 and 86,919,124.70

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Solution

The fourth proportional to 271,152,004.70, 406,728,007.05 and 86,919,124.70 is: 130,378,687.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,152,004.70 : 406,728,007.05 = 86,919,124.70 : x
  2. Step 2: Convert to fraction form
    271,152,004.70/406,728,007.05 = 86,919,124.70/x
  3. Step 3: Cross multiply
    271,152,004.70x = 406,728,007.05 × 86,919,124.70
  4. Step 4: Simplify right side
    271,152,004.70x = 35,352,442,363,761,432
  5. Step 5: Solve for x
    x = 35,352,442,363,761,432/271,152,004.70
  6. Step 6: Final answer
    x = 130,378,687.05

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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.