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Finding the Fourth Proportional to 315,563.84, 472,995.12 and 240,436.28

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Solution

The fourth proportional to 315,563.84, 472,995.12 and 240,436.28 is: 360,387.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,563.84 : 472,995.12 = 240,436.28 : x
  2. Step 2: Convert to fraction form
    315,563.84/472,995.12 = 240,436.28/x
  3. Step 3: Cross multiply
    315,563.84x = 472,995.12 × 240,436.28
  4. Step 4: Simplify right side
    315,563.84x = 113,725,187,110.95
  5. Step 5: Solve for x
    x = 113,725,187,110.95/315,563.84
  6. Step 6: Final answer
    x = 360,387.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.