Home / 278,767.36-418,178.64-89,180.12

Finding the Fourth Proportional to 278,767.36, 418,178.64 and 89,180.12

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Solution

The fourth proportional to 278,767.36, 418,178.64 and 89,180.12 is: 133,779.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,767.36 : 418,178.64 = 89,180.12 : x
  2. Step 2: Convert to fraction form
    278,767.36/418,178.64 = 89,180.12/x
  3. Step 3: Cross multiply
    278,767.36x = 418,178.64 × 89,180.12
  4. Step 4: Simplify right side
    278,767.36x = 37,293,221,296.64
  5. Step 5: Solve for x
    x = 37,293,221,296.64/278,767.36
  6. Step 6: Final answer
    x = 133,779.01

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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.