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Finding the Fourth Proportional to 266,248.60, 367,423 and 145,390.40

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Solution

The fourth proportional to 266,248.60, 367,423 and 145,390.40 is: 200,638.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,248.60 : 367,423 = 145,390.40 : x
  2. Step 2: Convert to fraction form
    266,248.60/367,423 = 145,390.40/x
  3. Step 3: Cross multiply
    266,248.60x = 367,423 × 145,390.40
  4. Step 4: Simplify right side
    266,248.60x = 53,419,776,939.20
  5. Step 5: Solve for x
    x = 53,419,776,939.20/266,248.60
  6. Step 6: Final answer
    x = 200,638.71

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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.