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Finding the Fourth Proportional to 220,156.57, 330,130.76 and 85,283.80

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Solution

The fourth proportional to 220,156.57, 330,130.76 and 85,283.80 is: 127,885.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,156.57 : 330,130.76 = 85,283.80 : x
  2. Step 2: Convert to fraction form
    220,156.57/330,130.76 = 85,283.80/x
  3. Step 3: Cross multiply
    220,156.57x = 330,130.76 × 85,283.80
  4. Step 4: Simplify right side
    220,156.57x = 28,154,806,314.93
  5. Step 5: Solve for x
    x = 28,154,806,314.93/220,156.57
  6. Step 6: Final answer
    x = 127,885.38

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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.