Home / 346,419.20-519,520.80-136,121.60

Finding the Fourth Proportional to 346,419.20, 519,520.80 and 136,121.60

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Solution

The fourth proportional to 346,419.20, 519,520.80 and 136,121.60 is: 204,139.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,419.20 : 519,520.80 = 136,121.60 : x
  2. Step 2: Convert to fraction form
    346,419.20/519,520.80 = 136,121.60/x
  3. Step 3: Cross multiply
    346,419.20x = 519,520.80 × 136,121.60
  4. Step 4: Simplify right side
    346,419.20x = 70,718,002,529.28
  5. Step 5: Solve for x
    x = 70,718,002,529.28/346,419.20
  6. Step 6: Final answer
    x = 204,139.96

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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.