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Finding the Fourth Proportional to 408,210.02, 612,326.55 and 112,722.02

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Solution

The fourth proportional to 408,210.02, 612,326.55 and 112,722.02 is: 169,086.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,210.02 : 612,326.55 = 112,722.02 : x
  2. Step 2: Convert to fraction form
    408,210.02/612,326.55 = 112,722.02/x
  3. Step 3: Cross multiply
    408,210.02x = 612,326.55 × 112,722.02
  4. Step 4: Simplify right side
    408,210.02x = 69,022,685,615.63
  5. Step 5: Solve for x
    x = 69,022,685,615.63/408,210.02
  6. Step 6: Final answer
    x = 169,086.21

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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.