Home / 261,297.56-391,946.52-172,530.20

Finding the Fourth Proportional to 261,297.56, 391,946.52 and 172,530.20

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Solution

The fourth proportional to 261,297.56, 391,946.52 and 172,530.20 is: 258,795.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,297.56 : 391,946.52 = 172,530.20 : x
  2. Step 2: Convert to fraction form
    261,297.56/391,946.52 = 172,530.20/x
  3. Step 3: Cross multiply
    261,297.56x = 391,946.52 × 172,530.20
  4. Step 4: Simplify right side
    261,297.56x = 67,622,611,484.90
  5. Step 5: Solve for x
    x = 67,622,611,484.90/261,297.56
  6. Step 6: Final answer
    x = 258,795.42

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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.