Home / 219,745.20-329,617.80-129,932.40

Finding the Fourth Proportional to 219,745.20, 329,617.80 and 129,932.40

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Solution

The fourth proportional to 219,745.20, 329,617.80 and 129,932.40 is: 194,898.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,745.20 : 329,617.80 = 129,932.40 : x
  2. Step 2: Convert to fraction form
    219,745.20/329,617.80 = 129,932.40/x
  3. Step 3: Cross multiply
    219,745.20x = 329,617.80 × 129,932.40
  4. Step 4: Simplify right side
    219,745.20x = 42,828,031,836.72
  5. Step 5: Solve for x
    x = 42,828,031,836.72/219,745.20
  6. Step 6: Final answer
    x = 194,898.60

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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.