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Finding the Fourth Proportional to 266,814, 368,290.80 and 191,581.20

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Solution

The fourth proportional to 266,814, 368,290.80 and 191,581.20 is: 264,444.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,814 : 368,290.80 = 191,581.20 : x
  2. Step 2: Convert to fraction form
    266,814/368,290.80 = 191,581.20/x
  3. Step 3: Cross multiply
    266,814x = 368,290.80 × 191,581.20
  4. Step 4: Simplify right side
    266,814x = 70,557,593,412.96
  5. Step 5: Solve for x
    x = 70,557,593,412.96/266,814
  6. Step 6: Final answer
    x = 264,444.87

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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.