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Finding the Fourth Proportional to 267,390.40, 368,860.80 and 181,320.28

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Solution

The fourth proportional to 267,390.40, 368,860.80 and 181,320.28 is: 250,128.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,390.40 : 368,860.80 = 181,320.28 : x
  2. Step 2: Convert to fraction form
    267,390.40/368,860.80 = 181,320.28/x
  3. Step 3: Cross multiply
    267,390.40x = 368,860.80 × 181,320.28
  4. Step 4: Simplify right side
    267,390.40x = 66,881,943,537.02
  5. Step 5: Solve for x
    x = 66,881,943,537.02/267,390.40
  6. Step 6: Final answer
    x = 250,128.44

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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.