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Finding the Fourth Proportional to 547,560.40, 821,263.80 and 173,621.20

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Solution

The fourth proportional to 547,560.40, 821,263.80 and 173,621.20 is: 260,407.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,560.40 : 821,263.80 = 173,621.20 : x
  2. Step 2: Convert to fraction form
    547,560.40/821,263.80 = 173,621.20/x
  3. Step 3: Cross multiply
    547,560.40x = 821,263.80 × 173,621.20
  4. Step 4: Simplify right side
    547,560.40x = 142,588,806,472.56
  5. Step 5: Solve for x
    x = 142,588,806,472.56/547,560.40
  6. Step 6: Final answer
    x = 260,407.45

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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.