Home / 289,656,961.86-399,723,819.30-157,498,007.42

Finding the Fourth Proportional to 289,656,961.86, 399,723,819.30 and 157,498,007.42

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Solution

The fourth proportional to 289,656,961.86, 399,723,819.30 and 157,498,007.42 is: 217,345,734.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,656,961.86 : 399,723,819.30 = 157,498,007.42 : x
  2. Step 2: Convert to fraction form
    289,656,961.86/399,723,819.30 = 157,498,007.42/x
  3. Step 3: Cross multiply
    289,656,961.86x = 399,723,819.30 × 157,498,007.42
  4. Step 4: Simplify right side
    289,656,961.86x = 62,955,705,058,062,136
  5. Step 5: Solve for x
    x = 62,955,705,058,062,136/289,656,961.86
  6. Step 6: Final answer
    x = 217,345,734.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.