Home / 219,618.20-329,427.30-86,454.20

Finding the Fourth Proportional to 219,618.20, 329,427.30 and 86,454.20

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Solution

The fourth proportional to 219,618.20, 329,427.30 and 86,454.20 is: 129,681.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,618.20 : 329,427.30 = 86,454.20 : x
  2. Step 2: Convert to fraction form
    219,618.20/329,427.30 = 86,454.20/x
  3. Step 3: Cross multiply
    219,618.20x = 329,427.30 × 86,454.20
  4. Step 4: Simplify right side
    219,618.20x = 28,480,373,679.66
  5. Step 5: Solve for x
    x = 28,480,373,679.66/219,618.20
  6. Step 6: Final answer
    x = 129,681.30

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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.