Home / 402,408,046.20-603,612,069.30-143,915,143.80

Finding the Fourth Proportional to 402,408,046.20, 603,612,069.30 and 143,915,143.80

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Solution

The fourth proportional to 402,408,046.20, 603,612,069.30 and 143,915,143.80 is: 215,872,715.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,408,046.20 : 603,612,069.30 = 143,915,143.80 : x
  2. Step 2: Convert to fraction form
    402,408,046.20/603,612,069.30 = 143,915,143.80/x
  3. Step 3: Cross multiply
    402,408,046.20x = 603,612,069.30 × 143,915,143.80
  4. Step 4: Simplify right side
    402,408,046.20x = 86,868,917,752,725,072
  5. Step 5: Solve for x
    x = 86,868,917,752,725,072/402,408,046.20
  6. Step 6: Final answer
    x = 215,872,715.70

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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.