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Finding the Fourth Proportional to 290,843.40, 436,265.10 and 124,955.40

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Solution

The fourth proportional to 290,843.40, 436,265.10 and 124,955.40 is: 187,433.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,843.40 : 436,265.10 = 124,955.40 : x
  2. Step 2: Convert to fraction form
    290,843.40/436,265.10 = 124,955.40/x
  3. Step 3: Cross multiply
    290,843.40x = 436,265.10 × 124,955.40
  4. Step 4: Simplify right side
    290,843.40x = 54,513,680,076.54
  5. Step 5: Solve for x
    x = 54,513,680,076.54/290,843.40
  6. Step 6: Final answer
    x = 187,433.10

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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.