Home / 280,915.26-387,663.18-153,591.90

Finding the Fourth Proportional to 280,915.26, 387,663.18 and 153,591.90

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Solution

The fourth proportional to 280,915.26, 387,663.18 and 153,591.90 is: 211,956.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,915.26 : 387,663.18 = 153,591.90 : x
  2. Step 2: Convert to fraction form
    280,915.26/387,663.18 = 153,591.90/x
  3. Step 3: Cross multiply
    280,915.26x = 387,663.18 × 153,591.90
  4. Step 4: Simplify right side
    280,915.26x = 59,541,924,376.24
  5. Step 5: Solve for x
    x = 59,541,924,376.24/280,915.26
  6. Step 6: Final answer
    x = 211,956.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.