Home / 315,946.20-435,997.98-172,706.88

Finding the Fourth Proportional to 315,946.20, 435,997.98 and 172,706.88

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Solution

The fourth proportional to 315,946.20, 435,997.98 and 172,706.88 is: 238,331.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,946.20 : 435,997.98 = 172,706.88 : x
  2. Step 2: Convert to fraction form
    315,946.20/435,997.98 = 172,706.88/x
  3. Step 3: Cross multiply
    315,946.20x = 435,997.98 × 172,706.88
  4. Step 4: Simplify right side
    315,946.20x = 75,299,850,812.10
  5. Step 5: Solve for x
    x = 75,299,850,812.10/315,946.20
  6. Step 6: Final answer
    x = 238,331.24

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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.