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Finding the Fourth Proportional to 228,693.60, 315,600.48 and 128,092.32

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Solution

The fourth proportional to 228,693.60, 315,600.48 and 128,092.32 is: 176,769.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,693.60 : 315,600.48 = 128,092.32 : x
  2. Step 2: Convert to fraction form
    228,693.60/315,600.48 = 128,092.32/x
  3. Step 3: Cross multiply
    228,693.60x = 315,600.48 × 128,092.32
  4. Step 4: Simplify right side
    228,693.60x = 40,425,997,676.31
  5. Step 5: Solve for x
    x = 40,425,997,676.31/228,693.60
  6. Step 6: Final answer
    x = 176,769.26

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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.