Home / 219,426.20-329,139.30-86,262.20

Finding the Fourth Proportional to 219,426.20, 329,139.30 and 86,262.20

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Solution

The fourth proportional to 219,426.20, 329,139.30 and 86,262.20 is: 129,393.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,426.20 : 329,139.30 = 86,262.20 : x
  2. Step 2: Convert to fraction form
    219,426.20/329,139.30 = 86,262.20/x
  3. Step 3: Cross multiply
    219,426.20x = 329,139.30 × 86,262.20
  4. Step 4: Simplify right side
    219,426.20x = 28,392,280,124.46
  5. Step 5: Solve for x
    x = 28,392,280,124.46/219,426.20
  6. Step 6: Final answer
    x = 129,393.30

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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.