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Finding the Fourth Proportional to 521,159.47, 781,873.98 and 305,200.59

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Solution

The fourth proportional to 521,159.47, 781,873.98 and 305,200.59 is: 457,879.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,159.47 : 781,873.98 = 305,200.59 : x
  2. Step 2: Convert to fraction form
    521,159.47/781,873.98 = 305,200.59/x
  3. Step 3: Cross multiply
    521,159.47x = 781,873.98 × 305,200.59
  4. Step 4: Simplify right side
    521,159.47x = 238,628,397,069.62
  5. Step 5: Solve for x
    x = 238,628,397,069.62/521,159.47
  6. Step 6: Final answer
    x = 457,879.81

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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.