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Finding the Fourth Proportional to 299,139.60, 447,615.90 and 220,407.60

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Solution

The fourth proportional to 299,139.60, 447,615.90 and 220,407.60 is: 329,805.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,139.60 : 447,615.90 = 220,407.60 : x
  2. Step 2: Convert to fraction form
    299,139.60/447,615.90 = 220,407.60/x
  3. Step 3: Cross multiply
    299,139.60x = 447,615.90 × 220,407.60
  4. Step 4: Simplify right side
    299,139.60x = 98,657,946,240.84
  5. Step 5: Solve for x
    x = 98,657,946,240.84/299,139.60
  6. Step 6: Final answer
    x = 329,805.70

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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.