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Finding the Fourth Proportional to 342,128.92, 513,139.47 and 114,422.80

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Solution

The fourth proportional to 342,128.92, 513,139.47 and 114,422.80 is: 171,616.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,128.92 : 513,139.47 = 114,422.80 : x
  2. Step 2: Convert to fraction form
    342,128.92/513,139.47 = 114,422.80/x
  3. Step 3: Cross multiply
    342,128.92x = 513,139.47 × 114,422.80
  4. Step 4: Simplify right side
    342,128.92x = 58,714,854,375.80
  5. Step 5: Solve for x
    x = 58,714,854,375.80/342,128.92
  6. Step 6: Final answer
    x = 171,616.17

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1.5x scale

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.