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Finding the Fourth Proportional to 547,327.16, 821,069.10 and 168,279.72

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Solution

The fourth proportional to 547,327.16, 821,069.10 and 168,279.72 is: 252,443.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,327.16 : 821,069.10 = 168,279.72 : x
  2. Step 2: Convert to fraction form
    547,327.16/821,069.10 = 168,279.72/x
  3. Step 3: Cross multiply
    547,327.16x = 821,069.10 × 168,279.72
  4. Step 4: Simplify right side
    547,327.16x = 138,169,278,248.65
  5. Step 5: Solve for x
    x = 138,169,278,248.65/547,327.16
  6. Step 6: Final answer
    x = 252,443.67

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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.