Home / 261,223.23-391,835.28-71,686.20

Finding the Fourth Proportional to 261,223.23, 391,835.28 and 71,686.20

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Solution

The fourth proportional to 261,223.23, 391,835.28 and 71,686.20 is: 107,529.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,223.23 : 391,835.28 = 71,686.20 : x
  2. Step 2: Convert to fraction form
    261,223.23/391,835.28 = 71,686.20/x
  3. Step 3: Cross multiply
    261,223.23x = 391,835.28 × 71,686.20
  4. Step 4: Simplify right side
    261,223.23x = 28,089,182,249.14
  5. Step 5: Solve for x
    x = 28,089,182,249.14/261,223.23
  6. Step 6: Final answer
    x = 107,529.42

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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.