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Finding the Fourth Proportional to 266,987.52, 368,409.60 and 147,778.56

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Solution

The fourth proportional to 266,987.52, 368,409.60 and 147,778.56 is: 203,916.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,987.52 : 368,409.60 = 147,778.56 : x
  2. Step 2: Convert to fraction form
    266,987.52/368,409.60 = 147,778.56/x
  3. Step 3: Cross multiply
    266,987.52x = 368,409.60 × 147,778.56
  4. Step 4: Simplify right side
    266,987.52x = 54,443,040,178.18
  5. Step 5: Solve for x
    x = 54,443,040,178.18/266,987.52
  6. Step 6: Final answer
    x = 203,916.05

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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.