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Finding the Fourth Proportional to 452,681.55, 679,022.19 and 115,722.90

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Solution

The fourth proportional to 452,681.55, 679,022.19 and 115,722.90 is: 173,584.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,681.55 : 679,022.19 = 115,722.90 : x
  2. Step 2: Convert to fraction form
    452,681.55/679,022.19 = 115,722.90/x
  3. Step 3: Cross multiply
    452,681.55x = 679,022.19 × 115,722.90
  4. Step 4: Simplify right side
    452,681.55x = 78,578,416,991.15
  5. Step 5: Solve for x
    x = 78,578,416,991.15/452,681.55
  6. Step 6: Final answer
    x = 173,584.32

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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.