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Finding the Fourth Proportional to 478,294.88, 660,076.88 and 263,434.86

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Solution

The fourth proportional to 478,294.88, 660,076.88 and 263,434.86 is: 363,556.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,294.88 : 660,076.88 = 263,434.86 : x
  2. Step 2: Convert to fraction form
    478,294.88/660,076.88 = 263,434.86/x
  3. Step 3: Cross multiply
    478,294.88x = 660,076.88 × 263,434.86
  4. Step 4: Simplify right side
    478,294.88x = 173,887,259,154.86
  5. Step 5: Solve for x
    x = 173,887,259,154.86/478,294.88
  6. Step 6: Final answer
    x = 363,556.60

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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.