Home / 318,947.06-478,421.27-299,460.89

Finding the Fourth Proportional to 318,947.06, 478,421.27 and 299,460.89

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Solution

The fourth proportional to 318,947.06, 478,421.27 and 299,460.89 is: 449,191.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,947.06 : 478,421.27 = 299,460.89 : x
  2. Step 2: Convert to fraction form
    318,947.06/478,421.27 = 299,460.89/x
  3. Step 3: Cross multiply
    318,947.06x = 478,421.27 × 299,460.89
  4. Step 4: Simplify right side
    318,947.06x = 143,268,459,309.13
  5. Step 5: Solve for x
    x = 143,268,459,309.13/318,947.06
  6. Step 6: Final answer
    x = 449,191.97

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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.