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Finding the Fourth Proportional to 228,732.20, 315,641.32 and 126,762.02

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Solution

The fourth proportional to 228,732.20, 315,641.32 and 126,762.02 is: 174,926.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,732.20 : 315,641.32 = 126,762.02 : x
  2. Step 2: Convert to fraction form
    228,732.20/315,641.32 = 126,762.02/x
  3. Step 3: Cross multiply
    228,732.20x = 315,641.32 × 126,762.02
  4. Step 4: Simplify right side
    228,732.20x = 40,011,329,423.55
  5. Step 5: Solve for x
    x = 40,011,329,423.55/228,732.20
  6. Step 6: Final answer
    x = 174,926.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.