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Finding the Fourth Proportional to 220,133.60, 330,200.40 and 86,945.30

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Solution

The fourth proportional to 220,133.60, 330,200.40 and 86,945.30 is: 130,417.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,133.60 : 330,200.40 = 86,945.30 : x
  2. Step 2: Convert to fraction form
    220,133.60/330,200.40 = 86,945.30/x
  3. Step 3: Cross multiply
    220,133.60x = 330,200.40 × 86,945.30
  4. Step 4: Simplify right side
    220,133.60x = 28,709,372,838.12
  5. Step 5: Solve for x
    x = 28,709,372,838.12/220,133.60
  6. Step 6: Final answer
    x = 130,417.95

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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.