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Finding the Fourth Proportional to 372,078.60, 513,462.18 and 202,317

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Solution

The fourth proportional to 372,078.60, 513,462.18 and 202,317 is: 279,194.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,078.60 : 513,462.18 = 202,317 : x
  2. Step 2: Convert to fraction form
    372,078.60/513,462.18 = 202,317/x
  3. Step 3: Cross multiply
    372,078.60x = 513,462.18 × 202,317
  4. Step 4: Simplify right side
    372,078.60x = 103,882,127,871.06
  5. Step 5: Solve for x
    x = 103,882,127,871.06/372,078.60
  6. Step 6: Final answer
    x = 279,194.04

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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.