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Finding the Fourth Proportional to 489,001.88, 674,854.98 and 274,155.86

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Solution

The fourth proportional to 489,001.88, 674,854.98 and 274,155.86 is: 378,353.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,001.88 : 674,854.98 = 274,155.86 : x
  2. Step 2: Convert to fraction form
    489,001.88/674,854.98 = 274,155.86/x
  3. Step 3: Cross multiply
    489,001.88x = 674,854.98 × 274,155.86
  4. Step 4: Simplify right side
    489,001.88x = 185,015,447,417.18
  5. Step 5: Solve for x
    x = 185,015,447,417.18/489,001.88
  6. Step 6: Final answer
    x = 378,353.24

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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.