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Finding the Fourth Proportional to 275,417.20, 412,931.40 and 106,872.40

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Solution

The fourth proportional to 275,417.20, 412,931.40 and 106,872.40 is: 160,233.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,417.20 : 412,931.40 = 106,872.40 : x
  2. Step 2: Convert to fraction form
    275,417.20/412,931.40 = 106,872.40/x
  3. Step 3: Cross multiply
    275,417.20x = 412,931.40 × 106,872.40
  4. Step 4: Simplify right side
    275,417.20x = 44,130,969,753.36
  5. Step 5: Solve for x
    x = 44,130,969,753.36/275,417.20
  6. Step 6: Final answer
    x = 160,233.17

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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.