Home / 278,887.10-418,330.65-91,874.30

Finding the Fourth Proportional to 278,887.10, 418,330.65 and 91,874.30

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Solution

The fourth proportional to 278,887.10, 418,330.65 and 91,874.30 is: 137,811.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,887.10 : 418,330.65 = 91,874.30 : x
  2. Step 2: Convert to fraction form
    278,887.10/418,330.65 = 91,874.30/x
  3. Step 3: Cross multiply
    278,887.10x = 418,330.65 × 91,874.30
  4. Step 4: Simplify right side
    278,887.10x = 38,433,835,637.30
  5. Step 5: Solve for x
    x = 38,433,835,637.30/278,887.10
  6. Step 6: Final answer
    x = 137,811.45

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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.