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Finding the Fourth Proportional to 385,890.73, 578,892.15 and 119,672.68

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Solution

The fourth proportional to 385,890.73, 578,892.15 and 119,672.68 is: 179,526.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,890.73 : 578,892.15 = 119,672.68 : x
  2. Step 2: Convert to fraction form
    385,890.73/578,892.15 = 119,672.68/x
  3. Step 3: Cross multiply
    385,890.73x = 578,892.15 × 119,672.68
  4. Step 4: Simplify right side
    385,890.73x = 69,277,575,021.46
  5. Step 5: Solve for x
    x = 69,277,575,021.46/385,890.73
  6. Step 6: Final answer
    x = 179,526.40

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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.