Home / 402,149,123.70-603,223,685.55-143,656,221.30

Finding the Fourth Proportional to 402,149,123.70, 603,223,685.55 and 143,656,221.30

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Solution

The fourth proportional to 402,149,123.70, 603,223,685.55 and 143,656,221.30 is: 215,484,331.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,149,123.70 : 603,223,685.55 = 143,656,221.30 : x
  2. Step 2: Convert to fraction form
    402,149,123.70/603,223,685.55 = 143,656,221.30/x
  3. Step 3: Cross multiply
    402,149,123.70x = 603,223,685.55 × 143,656,221.30
  4. Step 4: Simplify right side
    402,149,123.70x = 86,656,835,264,772,416
  5. Step 5: Solve for x
    x = 86,656,835,264,772,416/402,149,123.70
  6. Step 6: Final answer
    x = 215,484,331.95

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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.