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Finding the Fourth Proportional to 652,236.30, 978,354.45 and 178,920.90

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Solution

The fourth proportional to 652,236.30, 978,354.45 and 178,920.90 is: 268,381.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,236.30 : 978,354.45 = 178,920.90 : x
  2. Step 2: Convert to fraction form
    652,236.30/978,354.45 = 178,920.90/x
  3. Step 3: Cross multiply
    652,236.30x = 978,354.45 × 178,920.90
  4. Step 4: Simplify right side
    652,236.30x = 175,048,058,713.01
  5. Step 5: Solve for x
    x = 175,048,058,713.01/652,236.30
  6. Step 6: Final answer
    x = 268,381.35

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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.