Home / 385,849.98-578,861.03-119,612.70

Finding the Fourth Proportional to 385,849.98, 578,861.03 and 119,612.70

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Solution

The fourth proportional to 385,849.98, 578,861.03 and 119,612.70 is: 179,445.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,849.98 : 578,861.03 = 119,612.70 : x
  2. Step 2: Convert to fraction form
    385,849.98/578,861.03 = 119,612.70/x
  3. Step 3: Cross multiply
    385,849.98x = 578,861.03 × 119,612.70
  4. Step 4: Simplify right side
    385,849.98x = 69,239,131,022.11
  5. Step 5: Solve for x
    x = 69,239,131,022.11/385,849.98
  6. Step 6: Final answer
    x = 179,445.73

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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.