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Finding the Fourth Proportional to 243,855.79, 365,818.61 and 75,390.78

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Solution

The fourth proportional to 243,855.79, 365,818.61 and 75,390.78 is: 113,096.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,855.79 : 365,818.61 = 75,390.78 : x
  2. Step 2: Convert to fraction form
    243,855.79/365,818.61 = 75,390.78/x
  3. Step 3: Cross multiply
    243,855.79x = 365,818.61 × 75,390.78
  4. Step 4: Simplify right side
    243,855.79x = 27,579,350,346.42
  5. Step 5: Solve for x
    x = 27,579,350,346.42/243,855.79
  6. Step 6: Final answer
    x = 113,096.97

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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.