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Finding the Fourth Proportional to 272,619,052.40, 408,930,911.40 and 90,866,230.40

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Solution

The fourth proportional to 272,619,052.40, 408,930,911.40 and 90,866,230.40 is: 136,300,123.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,619,052.40 : 408,930,911.40 = 90,866,230.40 : x
  2. Step 2: Convert to fraction form
    272,619,052.40/408,930,911.40 = 90,866,230.40/x
  3. Step 3: Cross multiply
    272,619,052.40x = 408,930,911.40 × 90,866,230.40
  4. Step 4: Simplify right side
    272,619,052.40x = 37,158,010,412,954,384
  5. Step 5: Solve for x
    x = 37,158,010,412,954,384/272,619,052.40
  6. Step 6: Final answer
    x = 136,300,123.14

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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.