Home / 261,024.60-391,277.70-120,538.20

Finding the Fourth Proportional to 261,024.60, 391,277.70 and 120,538.20

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Solution

The fourth proportional to 261,024.60, 391,277.70 and 120,538.20 is: 180,687.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,024.60 : 391,277.70 = 120,538.20 : x
  2. Step 2: Convert to fraction form
    261,024.60/391,277.70 = 120,538.20/x
  3. Step 3: Cross multiply
    261,024.60x = 391,277.70 × 120,538.20
  4. Step 4: Simplify right side
    261,024.60x = 47,163,909,658.14
  5. Step 5: Solve for x
    x = 47,163,909,658.14/261,024.60
  6. Step 6: Final answer
    x = 180,687.60

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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.