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Finding the Fourth Proportional to 488,877.80, 674,649.20 and 274,017.87

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Solution

The fourth proportional to 488,877.80, 674,649.20 and 274,017.87 is: 378,143.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,877.80 : 674,649.20 = 274,017.87 : x
  2. Step 2: Convert to fraction form
    488,877.80/674,649.20 = 274,017.87/x
  3. Step 3: Cross multiply
    488,877.80x = 674,649.20 × 274,017.87
  4. Step 4: Simplify right side
    488,877.80x = 184,865,937,466.25
  5. Step 5: Solve for x
    x = 184,865,937,466.25/488,877.80
  6. Step 6: Final answer
    x = 378,143.45

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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.