Home / 221,053.60-331,580.40-137,072.80

Finding the Fourth Proportional to 221,053.60, 331,580.40 and 137,072.80

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Solution

The fourth proportional to 221,053.60, 331,580.40 and 137,072.80 is: 205,609.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,053.60 : 331,580.40 = 137,072.80 : x
  2. Step 2: Convert to fraction form
    221,053.60/331,580.40 = 137,072.80/x
  3. Step 3: Cross multiply
    221,053.60x = 331,580.40 × 137,072.80
  4. Step 4: Simplify right side
    221,053.60x = 45,450,653,853.12
  5. Step 5: Solve for x
    x = 45,450,653,853.12/221,053.60
  6. Step 6: Final answer
    x = 205,609.20

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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.