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Finding the Fourth Proportional to 478,177.88, 659,885.40 and 263,317.42

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Solution

The fourth proportional to 478,177.88, 659,885.40 and 263,317.42 is: 363,378.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,177.88 : 659,885.40 = 263,317.42 : x
  2. Step 2: Convert to fraction form
    478,177.88/659,885.40 = 263,317.42/x
  3. Step 3: Cross multiply
    478,177.88x = 659,885.40 × 263,317.42
  4. Step 4: Simplify right side
    478,177.88x = 173,759,321,023.67
  5. Step 5: Solve for x
    x = 173,759,321,023.67/478,177.88
  6. Step 6: Final answer
    x = 363,378.00

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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.