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Finding the Fourth Proportional to 478,882.40, 660,854.22 and 261,090.32

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Solution

The fourth proportional to 478,882.40, 660,854.22 and 261,090.32 is: 360,302.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,882.40 : 660,854.22 = 261,090.32 : x
  2. Step 2: Convert to fraction form
    478,882.40/660,854.22 = 261,090.32/x
  3. Step 3: Cross multiply
    478,882.40x = 660,854.22 × 261,090.32
  4. Step 4: Simplify right side
    478,882.40x = 172,542,639,773.15
  5. Step 5: Solve for x
    x = 172,542,639,773.15/478,882.40
  6. Step 6: Final answer
    x = 360,302.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.