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Finding the Fourth Proportional to 443,512.64, 665,373.44 and 143,970.08

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Solution

The fourth proportional to 443,512.64, 665,373.44 and 143,970.08 is: 215,989.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,512.64 : 665,373.44 = 143,970.08 : x
  2. Step 2: Convert to fraction form
    443,512.64/665,373.44 = 143,970.08/x
  3. Step 3: Cross multiply
    443,512.64x = 665,373.44 × 143,970.08
  4. Step 4: Simplify right side
    443,512.64x = 95,793,867,386.68
  5. Step 5: Solve for x
    x = 95,793,867,386.68/443,512.64
  6. Step 6: Final answer
    x = 215,989.04

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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.