Home / 352,021.20-528,031.80-115,306.80

Finding the Fourth Proportional to 352,021.20, 528,031.80 and 115,306.80

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Solution

The fourth proportional to 352,021.20, 528,031.80 and 115,306.80 is: 172,960.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,021.20 : 528,031.80 = 115,306.80 : x
  2. Step 2: Convert to fraction form
    352,021.20/528,031.80 = 115,306.80/x
  3. Step 3: Cross multiply
    352,021.20x = 528,031.80 × 115,306.80
  4. Step 4: Simplify right side
    352,021.20x = 60,885,657,156.24
  5. Step 5: Solve for x
    x = 60,885,657,156.24/352,021.20
  6. Step 6: Final answer
    x = 172,960.20

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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.