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Finding the Fourth Proportional to 243,756.60, 365,634.90 and 85,964.55

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Solution

The fourth proportional to 243,756.60, 365,634.90 and 85,964.55 is: 128,946.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,756.60 : 365,634.90 = 85,964.55 : x
  2. Step 2: Convert to fraction form
    243,756.60/365,634.90 = 85,964.55/x
  3. Step 3: Cross multiply
    243,756.60x = 365,634.90 × 85,964.55
  4. Step 4: Simplify right side
    243,756.60x = 31,431,639,642.80
  5. Step 5: Solve for x
    x = 31,431,639,642.80/243,756.60
  6. Step 6: Final answer
    x = 128,946.83

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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.