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Finding the Fourth Proportional to 681,278.59, 940,186.88 and 375,367.51

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Solution

The fourth proportional to 681,278.59, 940,186.88 and 375,367.51 is: 518,019.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,278.59 : 940,186.88 = 375,367.51 : x
  2. Step 2: Convert to fraction form
    681,278.59/940,186.88 = 375,367.51/x
  3. Step 3: Cross multiply
    681,278.59x = 940,186.88 × 375,367.51
  4. Step 4: Simplify right side
    681,278.59x = 352,915,606,203.43
  5. Step 5: Solve for x
    x = 352,915,606,203.43/681,278.59
  6. Step 6: Final answer
    x = 518,019.52

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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.