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Finding the Fourth Proportional to 385,912.86, 578,925.33 and 119,694.82

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Solution

The fourth proportional to 385,912.86, 578,925.33 and 119,694.82 is: 179,559.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,912.86 : 578,925.33 = 119,694.82 : x
  2. Step 2: Convert to fraction form
    385,912.86/578,925.33 = 119,694.82/x
  3. Step 3: Cross multiply
    385,912.86x = 578,925.33 × 119,694.82
  4. Step 4: Simplify right side
    385,912.86x = 69,294,363,167.79
  5. Step 5: Solve for x
    x = 69,294,363,167.79/385,912.86
  6. Step 6: Final answer
    x = 179,559.61

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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.