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Finding the Fourth Proportional to 194,564.80, 291,811.20 and 54,294.40

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Solution

The fourth proportional to 194,564.80, 291,811.20 and 54,294.40 is: 81,431.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,564.80 : 291,811.20 = 54,294.40 : x
  2. Step 2: Convert to fraction form
    194,564.80/291,811.20 = 54,294.40/x
  3. Step 3: Cross multiply
    194,564.80x = 291,811.20 × 54,294.40
  4. Step 4: Simplify right side
    194,564.80x = 15,843,714,017.28
  5. Step 5: Solve for x
    x = 15,843,714,017.28/194,564.80
  6. Step 6: Final answer
    x = 81,431.55

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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.