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Finding the Fourth Proportional to 353,013.98, 487,164.23 and 191,868.98

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Solution

The fourth proportional to 353,013.98, 487,164.23 and 191,868.98 is: 264,781.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,013.98 : 487,164.23 = 191,868.98 : x
  2. Step 2: Convert to fraction form
    353,013.98/487,164.23 = 191,868.98/x
  3. Step 3: Cross multiply
    353,013.98x = 487,164.23 × 191,868.98
  4. Step 4: Simplify right side
    353,013.98x = 93,471,700,507.42
  5. Step 5: Solve for x
    x = 93,471,700,507.42/353,013.98
  6. Step 6: Final answer
    x = 264,781.87

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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.