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Finding the Fourth Proportional to 379,872.73, 569,598.73 and 155,390.80

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Solution

The fourth proportional to 379,872.73, 569,598.73 and 155,390.80 is: 233,000.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,872.73 : 569,598.73 = 155,390.80 : x
  2. Step 2: Convert to fraction form
    379,872.73/569,598.73 = 155,390.80/x
  3. Step 3: Cross multiply
    379,872.73x = 569,598.73 × 155,390.80
  4. Step 4: Simplify right side
    379,872.73x = 88,510,402,333.68
  5. Step 5: Solve for x
    x = 88,510,402,333.68/379,872.73
  6. Step 6: Final answer
    x = 233,000.15

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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.