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Finding the Fourth Proportional to 280,770.88, 387,462.88 and 153,446.44

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Solution

The fourth proportional to 280,770.88, 387,462.88 and 153,446.44 is: 211,755.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,770.88 : 387,462.88 = 153,446.44 : x
  2. Step 2: Convert to fraction form
    280,770.88/387,462.88 = 153,446.44/x
  3. Step 3: Cross multiply
    280,770.88x = 387,462.88 × 153,446.44
  4. Step 4: Simplify right side
    280,770.88x = 59,454,799,568.15
  5. Step 5: Solve for x
    x = 59,454,799,568.15/280,770.88
  6. Step 6: Final answer
    x = 211,755.58

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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.