Home / 219,000.30-328,500.45-125,429.10

Finding the Fourth Proportional to 219,000.30, 328,500.45 and 125,429.10

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Solution

The fourth proportional to 219,000.30, 328,500.45 and 125,429.10 is: 188,143.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,000.30 : 328,500.45 = 125,429.10 : x
  2. Step 2: Convert to fraction form
    219,000.30/328,500.45 = 125,429.10/x
  3. Step 3: Cross multiply
    219,000.30x = 328,500.45 × 125,429.10
  4. Step 4: Simplify right side
    219,000.30x = 41,203,515,793.10
  5. Step 5: Solve for x
    x = 41,203,515,793.10/219,000.30
  6. Step 6: Final answer
    x = 188,143.65

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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.