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Finding the Fourth Proportional to 277,139.82, 382,447.58 and 156,278.90

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Solution

The fourth proportional to 277,139.82, 382,447.58 and 156,278.90 is: 215,661.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,139.82 : 382,447.58 = 156,278.90 : x
  2. Step 2: Convert to fraction form
    277,139.82/382,447.58 = 156,278.90/x
  3. Step 3: Cross multiply
    277,139.82x = 382,447.58 × 156,278.90
  4. Step 4: Simplify right side
    277,139.82x = 59,768,487,110.06
  5. Step 5: Solve for x
    x = 59,768,487,110.06/277,139.82
  6. Step 6: Final answer
    x = 215,661.85

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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.