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Finding the Fourth Proportional to 228,664.70, 342,997.05 and 70,909.10

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Solution

The fourth proportional to 228,664.70, 342,997.05 and 70,909.10 is: 106,363.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,664.70 : 342,997.05 = 70,909.10 : x
  2. Step 2: Convert to fraction form
    228,664.70/342,997.05 = 70,909.10/x
  3. Step 3: Cross multiply
    228,664.70x = 342,997.05 × 70,909.10
  4. Step 4: Simplify right side
    228,664.70x = 24,321,612,118.16
  5. Step 5: Solve for x
    x = 24,321,612,118.16/228,664.70
  6. Step 6: Final answer
    x = 106,363.65

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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.