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Finding the Fourth Proportional to 267,085.70, 400,628.55 and 127,117.70

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Solution

The fourth proportional to 267,085.70, 400,628.55 and 127,117.70 is: 190,676.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,085.70 : 400,628.55 = 127,117.70 : x
  2. Step 2: Convert to fraction form
    267,085.70/400,628.55 = 127,117.70/x
  3. Step 3: Cross multiply
    267,085.70x = 400,628.55 × 127,117.70
  4. Step 4: Simplify right side
    267,085.70x = 50,926,979,830.34
  5. Step 5: Solve for x
    x = 50,926,979,830.34/267,085.70
  6. Step 6: Final answer
    x = 190,676.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.