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Finding the Fourth Proportional to 278,308.96, 417,496.56 and 88,703.56

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Solution

The fourth proportional to 278,308.96, 417,496.56 and 88,703.56 is: 133,065.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,308.96 : 417,496.56 = 88,703.56 : x
  2. Step 2: Convert to fraction form
    278,308.96/417,496.56 = 88,703.56/x
  3. Step 3: Cross multiply
    278,308.96x = 417,496.56 × 88,703.56
  4. Step 4: Simplify right side
    278,308.96x = 37,033,431,159.75
  5. Step 5: Solve for x
    x = 37,033,431,159.75/278,308.96
  6. Step 6: Final answer
    x = 133,065.90

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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.