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Finding the Fourth Proportional to 472,418.40, 708,685.20 and 172,852.32

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Solution

The fourth proportional to 472,418.40, 708,685.20 and 172,852.32 is: 259,299.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,418.40 : 708,685.20 = 172,852.32 : x
  2. Step 2: Convert to fraction form
    472,418.40/708,685.20 = 172,852.32/x
  3. Step 3: Cross multiply
    472,418.40x = 708,685.20 × 172,852.32
  4. Step 4: Simplify right side
    472,418.40x = 122,497,880,969.66
  5. Step 5: Solve for x
    x = 122,497,880,969.66/472,418.40
  6. Step 6: Final answer
    x = 259,299.56

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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.