Home / 461,321.10-691,981.65-145,874.70

Finding the Fourth Proportional to 461,321.10, 691,981.65 and 145,874.70

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Solution

The fourth proportional to 461,321.10, 691,981.65 and 145,874.70 is: 218,812.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,321.10 : 691,981.65 = 145,874.70 : x
  2. Step 2: Convert to fraction form
    461,321.10/691,981.65 = 145,874.70/x
  3. Step 3: Cross multiply
    461,321.10x = 691,981.65 × 145,874.70
  4. Step 4: Simplify right side
    461,321.10x = 100,942,615,599.26
  5. Step 5: Solve for x
    x = 100,942,615,599.26/461,321.10
  6. Step 6: Final answer
    x = 218,812.05

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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.