Home / 219,386.20-329,079.30-86,222.20

Finding the Fourth Proportional to 219,386.20, 329,079.30 and 86,222.20

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Solution

The fourth proportional to 219,386.20, 329,079.30 and 86,222.20 is: 129,333.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,386.20 : 329,079.30 = 86,222.20 : x
  2. Step 2: Convert to fraction form
    219,386.20/329,079.30 = 86,222.20/x
  3. Step 3: Cross multiply
    219,386.20x = 329,079.30 × 86,222.20
  4. Step 4: Simplify right side
    219,386.20x = 28,373,941,220.46
  5. Step 5: Solve for x
    x = 28,373,941,220.46/219,386.20
  6. Step 6: Final answer
    x = 129,333.30

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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.