Home / 318,945.06-478,418.27-299,458.89

Finding the Fourth Proportional to 318,945.06, 478,418.27 and 299,458.89

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Solution

The fourth proportional to 318,945.06, 478,418.27 and 299,458.89 is: 449,188.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,945.06 : 478,418.27 = 299,458.89 : x
  2. Step 2: Convert to fraction form
    318,945.06/478,418.27 = 299,458.89/x
  3. Step 3: Cross multiply
    318,945.06x = 478,418.27 × 299,458.89
  4. Step 4: Simplify right side
    318,945.06x = 143,266,602,592.63
  5. Step 5: Solve for x
    x = 143,266,602,592.63/318,945.06
  6. Step 6: Final answer
    x = 449,188.97

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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.