Home / 278,259.16-383,997.70-157,397.88

Finding the Fourth Proportional to 278,259.16, 383,997.70 and 157,397.88

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Solution

The fourth proportional to 278,259.16, 383,997.70 and 157,397.88 is: 217,209.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,259.16 : 383,997.70 = 157,397.88 : x
  2. Step 2: Convert to fraction form
    278,259.16/383,997.70 = 157,397.88/x
  3. Step 3: Cross multiply
    278,259.16x = 383,997.70 × 157,397.88
  4. Step 4: Simplify right side
    278,259.16x = 60,440,423,904.88
  5. Step 5: Solve for x
    x = 60,440,423,904.88/278,259.16
  6. Step 6: Final answer
    x = 217,209.11

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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.