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Finding the Fourth Proportional to 391,958.60, 587,792.10 and 155,252.30

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Solution

The fourth proportional to 391,958.60, 587,792.10 and 155,252.30 is: 232,820.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,958.60 : 587,792.10 = 155,252.30 : x
  2. Step 2: Convert to fraction form
    391,958.60/587,792.10 = 155,252.30/x
  3. Step 3: Cross multiply
    391,958.60x = 587,792.10 × 155,252.30
  4. Step 4: Simplify right side
    391,958.60x = 91,256,075,446.83
  5. Step 5: Solve for x
    x = 91,256,075,446.83/391,958.60
  6. Step 6: Final answer
    x = 232,820.70

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1.5x scale

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.