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Finding the Fourth Proportional to 547,512.90, 821,123.55 and 168,432.90

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Solution

The fourth proportional to 547,512.90, 821,123.55 and 168,432.90 is: 252,604.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,512.90 : 821,123.55 = 168,432.90 : x
  2. Step 2: Convert to fraction form
    547,512.90/821,123.55 = 168,432.90/x
  3. Step 3: Cross multiply
    547,512.90x = 821,123.55 × 168,432.90
  4. Step 4: Simplify right side
    547,512.90x = 138,304,220,784.80
  5. Step 5: Solve for x
    x = 138,304,220,784.80/547,512.90
  6. Step 6: Final answer
    x = 252,604.50

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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.