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Finding the Fourth Proportional to 379,867.73, 569,591.23 and 155,385.80

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Solution

The fourth proportional to 379,867.73, 569,591.23 and 155,385.80 is: 232,992.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,867.73 : 569,591.23 = 155,385.80 : x
  2. Step 2: Convert to fraction form
    379,867.73/569,591.23 = 155,385.80/x
  3. Step 3: Cross multiply
    379,867.73x = 569,591.23 × 155,385.80
  4. Step 4: Simplify right side
    379,867.73x = 88,506,388,946.53
  5. Step 5: Solve for x
    x = 88,506,388,946.53/379,867.73
  6. Step 6: Final answer
    x = 232,992.65

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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.