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Finding the Fourth Proportional to 243,351.02, 365,045.70 and 85,614.86

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Solution

The fourth proportional to 243,351.02, 365,045.70 and 85,614.86 is: 128,429.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,351.02 : 365,045.70 = 85,614.86 : x
  2. Step 2: Convert to fraction form
    243,351.02/365,045.70 = 85,614.86/x
  3. Step 3: Cross multiply
    243,351.02x = 365,045.70 × 85,614.86
  4. Step 4: Simplify right side
    243,351.02x = 31,253,336,499.10
  5. Step 5: Solve for x
    x = 31,253,336,499.10/243,351.02
  6. Step 6: Final answer
    x = 128,429.03

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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.