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Finding the Fourth Proportional to 267,681.51, 401,716.67 and 215,718.39

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Solution

The fourth proportional to 267,681.51, 401,716.67 and 215,718.39 is: 323,734.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,681.51 : 401,716.67 = 215,718.39 : x
  2. Step 2: Convert to fraction form
    267,681.51/401,716.67 = 215,718.39/x
  3. Step 3: Cross multiply
    267,681.51x = 401,716.67 × 215,718.39
  4. Step 4: Simplify right side
    267,681.51x = 86,657,672,209.97
  5. Step 5: Solve for x
    x = 86,657,672,209.97/267,681.51
  6. Step 6: Final answer
    x = 323,734.25

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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.