Home / 221,522.31-305,726.40-126,043.97

Finding the Fourth Proportional to 221,522.31, 305,726.40 and 126,043.97

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Solution

The fourth proportional to 221,522.31, 305,726.40 and 126,043.97 is: 173,955.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,522.31 : 305,726.40 = 126,043.97 : x
  2. Step 2: Convert to fraction form
    221,522.31/305,726.40 = 126,043.97/x
  3. Step 3: Cross multiply
    221,522.31x = 305,726.40 × 126,043.97
  4. Step 4: Simplify right side
    221,522.31x = 38,534,967,661.18
  5. Step 5: Solve for x
    x = 38,534,967,661.18/221,522.31
  6. Step 6: Final answer
    x = 173,955.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.