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Finding the Fourth Proportional to 547,805.70, 821,708.55 and 173,828.10

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Solution

The fourth proportional to 547,805.70, 821,708.55 and 173,828.10 is: 260,742.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,805.70 : 821,708.55 = 173,828.10 : x
  2. Step 2: Convert to fraction form
    547,805.70/821,708.55 = 173,828.10/x
  3. Step 3: Cross multiply
    547,805.70x = 821,708.55 × 173,828.10
  4. Step 4: Simplify right side
    547,805.70x = 142,836,036,000.26
  5. Step 5: Solve for x
    x = 142,836,036,000.26/547,805.70
  6. Step 6: Final answer
    x = 260,742.15

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Similar ratio
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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.