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Finding the Fourth Proportional to 274,317.10, 411,475.65 and 87,328.60

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Solution

The fourth proportional to 274,317.10, 411,475.65 and 87,328.60 is: 130,992.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,317.10 : 411,475.65 = 87,328.60 : x
  2. Step 2: Convert to fraction form
    274,317.10/411,475.65 = 87,328.60/x
  3. Step 3: Cross multiply
    274,317.10x = 411,475.65 × 87,328.60
  4. Step 4: Simplify right side
    274,317.10x = 35,933,592,448.59
  5. Step 5: Solve for x
    x = 35,933,592,448.59/274,317.10
  6. Step 6: Final answer
    x = 130,992.90

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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.