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Finding the Fourth Proportional to 261,888.38, 361,449.77 and 154,484.81

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Solution

The fourth proportional to 261,888.38, 361,449.77 and 154,484.81 is: 213,214.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,888.38 : 361,449.77 = 154,484.81 : x
  2. Step 2: Convert to fraction form
    261,888.38/361,449.77 = 154,484.81/x
  3. Step 3: Cross multiply
    261,888.38x = 361,449.77 × 154,484.81
  4. Step 4: Simplify right side
    261,888.38x = 55,838,496,463.32
  5. Step 5: Solve for x
    x = 55,838,496,463.32/261,888.38
  6. Step 6: Final answer
    x = 213,214.87

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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.