Home / 402,408,047.70-603,612,071.55-143,915,145.30

Finding the Fourth Proportional to 402,408,047.70, 603,612,071.55 and 143,915,145.30

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Solution

The fourth proportional to 402,408,047.70, 603,612,071.55 and 143,915,145.30 is: 215,872,717.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,408,047.70 : 603,612,071.55 = 143,915,145.30 : x
  2. Step 2: Convert to fraction form
    402,408,047.70/603,612,071.55 = 143,915,145.30/x
  3. Step 3: Cross multiply
    402,408,047.70x = 603,612,071.55 × 143,915,145.30
  4. Step 4: Simplify right side
    402,408,047.70x = 86,868,918,981,952,240
  5. Step 5: Solve for x
    x = 86,868,918,981,952,240/402,408,047.70
  6. Step 6: Final answer
    x = 215,872,717.95

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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.