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Finding the Fourth Proportional to 228,654.72, 315,552.96 and 128,053.44

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Solution

The fourth proportional to 228,654.72, 315,552.96 and 128,053.44 is: 176,719.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,654.72 : 315,552.96 = 128,053.44 : x
  2. Step 2: Convert to fraction form
    228,654.72/315,552.96 = 128,053.44/x
  3. Step 3: Cross multiply
    228,654.72x = 315,552.96 × 128,053.44
  4. Step 4: Simplify right side
    228,654.72x = 40,407,642,030.18
  5. Step 5: Solve for x
    x = 40,407,642,030.18/228,654.72
  6. Step 6: Final answer
    x = 176,719.04

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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.