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Finding the Fourth Proportional to 228,478.08, 315,089.04 and 156,731.52

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Solution

The fourth proportional to 228,478.08, 315,089.04 and 156,731.52 is: 216,144.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,478.08 : 315,089.04 = 156,731.52 : x
  2. Step 2: Convert to fraction form
    228,478.08/315,089.04 = 156,731.52/x
  3. Step 3: Cross multiply
    228,478.08x = 315,089.04 × 156,731.52
  4. Step 4: Simplify right side
    228,478.08x = 49,384,384,174.54
  5. Step 5: Solve for x
    x = 49,384,384,174.54/228,478.08
  6. Step 6: Final answer
    x = 216,144.95

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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.