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Finding the Fourth Proportional to 290,032.72, 400,239.13 and 160,963.71

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Solution

The fourth proportional to 290,032.72, 400,239.13 and 160,963.71 is: 222,126.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,032.72 : 400,239.13 = 160,963.71 : x
  2. Step 2: Convert to fraction form
    290,032.72/400,239.13 = 160,963.71/x
  3. Step 3: Cross multiply
    290,032.72x = 400,239.13 × 160,963.71
  4. Step 4: Simplify right side
    290,032.72x = 64,423,975,251.97
  5. Step 5: Solve for x
    x = 64,423,975,251.97/290,032.72
  6. Step 6: Final answer
    x = 222,126.58

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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.