Home / 386,156.16-579,311.60-133,445.92

Finding the Fourth Proportional to 386,156.16, 579,311.60 and 133,445.92

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Solution

The fourth proportional to 386,156.16, 579,311.60 and 133,445.92 is: 200,195.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,156.16 : 579,311.60 = 133,445.92 : x
  2. Step 2: Convert to fraction form
    386,156.16/579,311.60 = 133,445.92/x
  3. Step 3: Cross multiply
    386,156.16x = 579,311.60 × 133,445.92
  4. Step 4: Simplify right side
    386,156.16x = 77,306,769,428.67
  5. Step 5: Solve for x
    x = 77,306,769,428.67/386,156.16
  6. Step 6: Final answer
    x = 200,195.61

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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.