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Finding the Fourth Proportional to 295,806.20, 443,987.70 and 155,665.40

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Solution

The fourth proportional to 295,806.20, 443,987.70 and 155,665.40 is: 233,644.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,806.20 : 443,987.70 = 155,665.40 : x
  2. Step 2: Convert to fraction form
    295,806.20/443,987.70 = 155,665.40/x
  3. Step 3: Cross multiply
    295,806.20x = 443,987.70 × 155,665.40
  4. Step 4: Simplify right side
    295,806.20x = 69,113,522,915.58
  5. Step 5: Solve for x
    x = 69,113,522,915.58/295,806.20
  6. Step 6: Final answer
    x = 233,644.61

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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.