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Finding the Fourth Proportional to 681,279.59, 940,188.26 and 375,368.51

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Solution

The fourth proportional to 681,279.59, 940,188.26 and 375,368.51 is: 518,020.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,279.59 : 940,188.26 = 375,368.51 : x
  2. Step 2: Convert to fraction form
    681,279.59/940,188.26 = 375,368.51/x
  3. Step 3: Cross multiply
    681,279.59x = 940,188.26 × 375,368.51
  4. Step 4: Simplify right side
    681,279.59x = 352,917,066,275.69
  5. Step 5: Solve for x
    x = 352,917,066,275.69/681,279.59
  6. Step 6: Final answer
    x = 518,020.90

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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.