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Finding the Fourth Proportional to 228,463.82, 315,269.78 and 126,482.12

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Solution

The fourth proportional to 228,463.82, 315,269.78 and 126,482.12 is: 174,539.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,463.82 : 315,269.78 = 126,482.12 : x
  2. Step 2: Convert to fraction form
    228,463.82/315,269.78 = 126,482.12/x
  3. Step 3: Cross multiply
    228,463.82x = 315,269.78 × 126,482.12
  4. Step 4: Simplify right side
    228,463.82x = 39,875,987,937.57
  5. Step 5: Solve for x
    x = 39,875,987,937.57/228,463.82
  6. Step 6: Final answer
    x = 174,539.62

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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.