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Finding the Fourth Proportional to 207,291.12, 310,982.04 and 67,047.72

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Solution

The fourth proportional to 207,291.12, 310,982.04 and 67,047.72 is: 100,586.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,291.12 : 310,982.04 = 67,047.72 : x
  2. Step 2: Convert to fraction form
    207,291.12/310,982.04 = 67,047.72/x
  3. Step 3: Cross multiply
    207,291.12x = 310,982.04 × 67,047.72
  4. Step 4: Simplify right side
    207,291.12x = 20,850,636,742.95
  5. Step 5: Solve for x
    x = 20,850,636,742.95/207,291.12
  6. Step 6: Final answer
    x = 100,586.25

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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.