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Finding the Fourth Proportional to 547,329.16, 821,072.10 and 168,281.72

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Solution

The fourth proportional to 547,329.16, 821,072.10 and 168,281.72 is: 252,446.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,329.16 : 821,072.10 = 168,281.72 : x
  2. Step 2: Convert to fraction form
    547,329.16/821,072.10 = 168,281.72/x
  3. Step 3: Cross multiply
    547,329.16x = 821,072.10 × 168,281.72
  4. Step 4: Simplify right side
    547,329.16x = 138,171,425,232.01
  5. Step 5: Solve for x
    x = 138,171,425,232.01/547,329.16
  6. Step 6: Final answer
    x = 252,446.67

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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.