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Finding the Fourth Proportional to 315,491.76, 435,388.20 and 179,545.24

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Solution

The fourth proportional to 315,491.76, 435,388.20 and 179,545.24 is: 247,777.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,491.76 : 435,388.20 = 179,545.24 : x
  2. Step 2: Convert to fraction form
    315,491.76/435,388.20 = 179,545.24/x
  3. Step 3: Cross multiply
    315,491.76x = 435,388.20 × 179,545.24
  4. Step 4: Simplify right side
    315,491.76x = 78,171,878,862.17
  5. Step 5: Solve for x
    x = 78,171,878,862.17/315,491.76
  6. Step 6: Final answer
    x = 247,777.88

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1.5x scale

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.