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Finding the Fourth Proportional to 391,600.48, 587,595.84 and 155,113.60

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Solution

The fourth proportional to 391,600.48, 587,595.84 and 155,113.60 is: 232,747.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,600.48 : 587,595.84 = 155,113.60 : x
  2. Step 2: Convert to fraction form
    391,600.48/587,595.84 = 155,113.60/x
  3. Step 3: Cross multiply
    391,600.48x = 587,595.84 × 155,113.60
  4. Step 4: Simplify right side
    391,600.48x = 91,144,106,087.42
  5. Step 5: Solve for x
    x = 91,144,106,087.42/391,600.48
  6. Step 6: Final answer
    x = 232,747.69

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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.