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Finding the Fourth Proportional to 252,017.40, 378,026.10 and 126,046.20

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Solution

The fourth proportional to 252,017.40, 378,026.10 and 126,046.20 is: 189,069.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,017.40 : 378,026.10 = 126,046.20 : x
  2. Step 2: Convert to fraction form
    252,017.40/378,026.10 = 126,046.20/x
  3. Step 3: Cross multiply
    252,017.40x = 378,026.10 × 126,046.20
  4. Step 4: Simplify right side
    252,017.40x = 47,648,753,405.82
  5. Step 5: Solve for x
    x = 47,648,753,405.82/252,017.40
  6. Step 6: Final answer
    x = 189,069.30

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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.