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Finding the Fourth Proportional to 547,009.70, 820,514.55 and 192,059.60

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Solution

The fourth proportional to 547,009.70, 820,514.55 and 192,059.60 is: 288,089.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,009.70 : 820,514.55 = 192,059.60 : x
  2. Step 2: Convert to fraction form
    547,009.70/820,514.55 = 192,059.60/x
  3. Step 3: Cross multiply
    547,009.70x = 820,514.55 × 192,059.60
  4. Step 4: Simplify right side
    547,009.70x = 157,587,696,267.18
  5. Step 5: Solve for x
    x = 157,587,696,267.18/547,009.70
  6. Step 6: Final answer
    x = 288,089.40

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Similar ratio
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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.