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Finding the Fourth Proportional to 443,996.80, 665,995.20 and 144,505.60

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Solution

The fourth proportional to 443,996.80, 665,995.20 and 144,505.60 is: 216,758.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,996.80 : 665,995.20 = 144,505.60 : x
  2. Step 2: Convert to fraction form
    443,996.80/665,995.20 = 144,505.60/x
  3. Step 3: Cross multiply
    443,996.80x = 665,995.20 × 144,505.60
  4. Step 4: Simplify right side
    443,996.80x = 96,240,035,973.12
  5. Step 5: Solve for x
    x = 96,240,035,973.12/443,996.80
  6. Step 6: Final answer
    x = 216,758.40

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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.