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Finding the Fourth Proportional to 194,481.80, 291,686.70 and 54,211.40

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Solution

The fourth proportional to 194,481.80, 291,686.70 and 54,211.40 is: 81,307.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,481.80 : 291,686.70 = 54,211.40 : x
  2. Step 2: Convert to fraction form
    194,481.80/291,686.70 = 54,211.40/x
  3. Step 3: Cross multiply
    194,481.80x = 291,686.70 × 54,211.40
  4. Step 4: Simplify right side
    194,481.80x = 15,812,744,368.38
  5. Step 5: Solve for x
    x = 15,812,744,368.38/194,481.80
  6. Step 6: Final answer
    x = 81,307.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.