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Finding the Fourth Proportional to 290,354.88, 400,395.04 and 273,422.40

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Solution

The fourth proportional to 290,354.88, 400,395.04 and 273,422.40 is: 377,045.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,354.88 : 400,395.04 = 273,422.40 : x
  2. Step 2: Convert to fraction form
    290,354.88/400,395.04 = 273,422.40/x
  3. Step 3: Cross multiply
    290,354.88x = 400,395.04 × 273,422.40
  4. Step 4: Simplify right side
    290,354.88x = 109,476,972,784.90
  5. Step 5: Solve for x
    x = 109,476,972,784.90/290,354.88
  6. Step 6: Final answer
    x = 377,045.40

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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.