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Finding the Fourth Proportional to 528,031.80, 792,047.70 and 172,960.20

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Solution

The fourth proportional to 528,031.80, 792,047.70 and 172,960.20 is: 259,440.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,031.80 : 792,047.70 = 172,960.20 : x
  2. Step 2: Convert to fraction form
    528,031.80/792,047.70 = 172,960.20/x
  3. Step 3: Cross multiply
    528,031.80x = 792,047.70 × 172,960.20
  4. Step 4: Simplify right side
    528,031.80x = 136,992,728,601.54
  5. Step 5: Solve for x
    x = 136,992,728,601.54/528,031.80
  6. Step 6: Final answer
    x = 259,440.30

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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.