Home / 261,021.60-391,204.35-127,614.60

Finding the Fourth Proportional to 261,021.60, 391,204.35 and 127,614.60

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Solution

The fourth proportional to 261,021.60, 391,204.35 and 127,614.60 is: 191,261.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,021.60 : 391,204.35 = 127,614.60 : x
  2. Step 2: Convert to fraction form
    261,021.60/391,204.35 = 127,614.60/x
  3. Step 3: Cross multiply
    261,021.60x = 391,204.35 × 127,614.60
  4. Step 4: Simplify right side
    261,021.60x = 49,923,386,643.51
  5. Step 5: Solve for x
    x = 49,923,386,643.51/261,021.60
  6. Step 6: Final answer
    x = 191,261.51

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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.