Home / 278,020.20-417,030.30-138,052.20

Finding the Fourth Proportional to 278,020.20, 417,030.30 and 138,052.20

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Solution

The fourth proportional to 278,020.20, 417,030.30 and 138,052.20 is: 207,078.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,020.20 : 417,030.30 = 138,052.20 : x
  2. Step 2: Convert to fraction form
    278,020.20/417,030.30 = 138,052.20/x
  3. Step 3: Cross multiply
    278,020.20x = 417,030.30 × 138,052.20
  4. Step 4: Simplify right side
    278,020.20x = 57,571,950,381.66
  5. Step 5: Solve for x
    x = 57,571,950,381.66/278,020.20
  6. Step 6: Final answer
    x = 207,078.30

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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.