Home / 318,944.56-478,417.52-299,458.39

Finding the Fourth Proportional to 318,944.56, 478,417.52 and 299,458.39

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Solution

The fourth proportional to 318,944.56, 478,417.52 and 299,458.39 is: 449,188.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,944.56 : 478,417.52 = 299,458.39 : x
  2. Step 2: Convert to fraction form
    318,944.56/478,417.52 = 299,458.39/x
  3. Step 3: Cross multiply
    318,944.56x = 478,417.52 × 299,458.39
  4. Step 4: Simplify right side
    318,944.56x = 143,266,138,789.70
  5. Step 5: Solve for x
    x = 143,266,138,789.70/318,944.56
  6. Step 6: Final answer
    x = 449,188.22

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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.