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Finding the Fourth Proportional to 282,654.11, 390,058.22 and 155,326.97

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Solution

The fourth proportional to 282,654.11, 390,058.22 and 155,326.97 is: 214,348.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,654.11 : 390,058.22 = 155,326.97 : x
  2. Step 2: Convert to fraction form
    282,654.11/390,058.22 = 155,326.97/x
  3. Step 3: Cross multiply
    282,654.11x = 390,058.22 × 155,326.97
  4. Step 4: Simplify right side
    282,654.11x = 60,586,562,799.66
  5. Step 5: Solve for x
    x = 60,586,562,799.66/282,654.11
  6. Step 6: Final answer
    x = 214,348.78

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1.5x scale

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.