Home / 461,318.80-691,848.60-145,872.40

Finding the Fourth Proportional to 461,318.80, 691,848.60 and 145,872.40

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Solution

The fourth proportional to 461,318.80, 691,848.60 and 145,872.40 is: 218,767.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,318.80 : 691,848.60 = 145,872.40 : x
  2. Step 2: Convert to fraction form
    461,318.80/691,848.60 = 145,872.40/x
  3. Step 3: Cross multiply
    461,318.80x = 691,848.60 × 145,872.40
  4. Step 4: Simplify right side
    461,318.80x = 100,921,615,718.64
  5. Step 5: Solve for x
    x = 100,921,615,718.64/461,318.80
  6. Step 6: Final answer
    x = 218,767.62

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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.