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Finding the Fourth Proportional to 262,121.80, 392,664.30 and 243,459.40

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Solution

The fourth proportional to 262,121.80, 392,664.30 and 243,459.40 is: 364,707.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,121.80 : 392,664.30 = 243,459.40 : x
  2. Step 2: Convert to fraction form
    262,121.80/392,664.30 = 243,459.40/x
  3. Step 3: Cross multiply
    262,121.80x = 392,664.30 × 243,459.40
  4. Step 4: Simplify right side
    262,121.80x = 95,597,814,879.42
  5. Step 5: Solve for x
    x = 95,597,814,879.42/262,121.80
  6. Step 6: Final answer
    x = 364,707.61

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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.