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Finding the Fourth Proportional to 228,595.15, 315,437.25 and 126,617.87

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Solution

The fourth proportional to 228,595.15, 315,437.25 and 126,617.87 is: 174,719.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,595.15 : 315,437.25 = 126,617.87 : x
  2. Step 2: Convert to fraction form
    228,595.15/315,437.25 = 126,617.87/x
  3. Step 3: Cross multiply
    228,595.15x = 315,437.25 × 126,617.87
  4. Step 4: Simplify right side
    228,595.15x = 39,939,992,713.66
  5. Step 5: Solve for x
    x = 39,939,992,713.66/228,595.15
  6. Step 6: Final answer
    x = 174,719.34

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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.