Home / 261,192.03-391,788.13-172,424.78

Finding the Fourth Proportional to 261,192.03, 391,788.13 and 172,424.78

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Solution

The fourth proportional to 261,192.03, 391,788.13 and 172,424.78 is: 258,637.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,192.03 : 391,788.13 = 172,424.78 : x
  2. Step 2: Convert to fraction form
    261,192.03/391,788.13 = 172,424.78/x
  3. Step 3: Cross multiply
    261,192.03x = 391,788.13 × 172,424.78
  4. Step 4: Simplify right side
    261,192.03x = 67,553,980,907.40
  5. Step 5: Solve for x
    x = 67,553,980,907.40/261,192.03
  6. Step 6: Final answer
    x = 258,637.22

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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.