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Finding the Fourth Proportional to 416,908.09, 625,208.86 and 143,276.59

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Solution

The fourth proportional to 416,908.09, 625,208.86 and 143,276.59 is: 214,862.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,908.09 : 625,208.86 = 143,276.59 : x
  2. Step 2: Convert to fraction form
    416,908.09/625,208.86 = 143,276.59/x
  3. Step 3: Cross multiply
    416,908.09x = 625,208.86 × 143,276.59
  4. Step 4: Simplify right side
    416,908.09x = 89,577,793,498.59
  5. Step 5: Solve for x
    x = 89,577,793,498.59/416,908.09
  6. Step 6: Final answer
    x = 214,862.21

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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.