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Finding the Fourth Proportional to 228,728.32, 315,251 and 152,110.48

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Solution

The fourth proportional to 228,728.32, 315,251 and 152,110.48 is: 209,650.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,728.32 : 315,251 = 152,110.48 : x
  2. Step 2: Convert to fraction form
    228,728.32/315,251 = 152,110.48/x
  3. Step 3: Cross multiply
    228,728.32x = 315,251 × 152,110.48
  4. Step 4: Simplify right side
    228,728.32x = 47,952,980,930.48
  5. Step 5: Solve for x
    x = 47,952,980,930.48/228,728.32
  6. Step 6: Final answer
    x = 209,650.39

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1.5x scale

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.