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Finding the Fourth Proportional to 220,141.40, 330,557.70 and 126,829.40

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Solution

The fourth proportional to 220,141.40, 330,557.70 and 126,829.40 is: 190,443.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,141.40 : 330,557.70 = 126,829.40 : x
  2. Step 2: Convert to fraction form
    220,141.40/330,557.70 = 126,829.40/x
  3. Step 3: Cross multiply
    220,141.40x = 330,557.70 × 126,829.40
  4. Step 4: Simplify right side
    220,141.40x = 41,924,434,756.38
  5. Step 5: Solve for x
    x = 41,924,434,756.38/220,141.40
  6. Step 6: Final answer
    x = 190,443.21

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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.