Home / 521,169.39-781,762.29-205,623.56

Finding the Fourth Proportional to 521,169.39, 781,762.29 and 205,623.56

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Solution

The fourth proportional to 521,169.39, 781,762.29 and 205,623.56 is: 308,438.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,169.39 : 781,762.29 = 205,623.56 : x
  2. Step 2: Convert to fraction form
    521,169.39/781,762.29 = 205,623.56/x
  3. Step 3: Cross multiply
    521,169.39x = 781,762.29 × 205,623.56
  4. Step 4: Simplify right side
    521,169.39x = 160,748,746,326.87
  5. Step 5: Solve for x
    x = 160,748,746,326.87/521,169.39
  6. Step 6: Final answer
    x = 308,438.58

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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.