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Finding the Fourth Proportional to 272,372.04, 408,558.18 and 85,398.12

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Solution

The fourth proportional to 272,372.04, 408,558.18 and 85,398.12 is: 128,097.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,372.04 : 408,558.18 = 85,398.12 : x
  2. Step 2: Convert to fraction form
    272,372.04/408,558.18 = 85,398.12/x
  3. Step 3: Cross multiply
    272,372.04x = 408,558.18 × 85,398.12
  4. Step 4: Simplify right side
    272,372.04x = 34,890,100,482.62
  5. Step 5: Solve for x
    x = 34,890,100,482.62/272,372.04
  6. Step 6: Final answer
    x = 128,097.22

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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.