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Finding the Fourth Proportional to 547,751.40, 821,691.10 and 173,812.20

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Solution

The fourth proportional to 547,751.40, 821,691.10 and 173,812.20 is: 260,738.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,751.40 : 821,691.10 = 173,812.20 : x
  2. Step 2: Convert to fraction form
    547,751.40/821,691.10 = 173,812.20/x
  3. Step 3: Cross multiply
    547,751.40x = 821,691.10 × 173,812.20
  4. Step 4: Simplify right side
    547,751.40x = 142,819,937,811.42
  5. Step 5: Solve for x
    x = 142,819,937,811.42/547,751.40
  6. Step 6: Final answer
    x = 260,738.61

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1.5x scale

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.