Home / 261,161.03-391,741.67-172,393.79

Finding the Fourth Proportional to 261,161.03, 391,741.67 and 172,393.79

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Solution

The fourth proportional to 261,161.03, 391,741.67 and 172,393.79 is: 258,590.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,161.03 : 391,741.67 = 172,393.79 : x
  2. Step 2: Convert to fraction form
    261,161.03/391,741.67 = 172,393.79/x
  3. Step 3: Cross multiply
    261,161.03x = 391,741.67 × 172,393.79
  4. Step 4: Simplify right side
    261,161.03x = 67,533,831,192.23
  5. Step 5: Solve for x
    x = 67,533,831,192.23/261,161.03
  6. Step 6: Final answer
    x = 258,590.77

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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.