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Finding the Fourth Proportional to 290,573.32, 400,829.28 and 270,023.35

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Solution

The fourth proportional to 290,573.32, 400,829.28 and 270,023.35 is: 372,481.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,573.32 : 400,829.28 = 270,023.35 : x
  2. Step 2: Convert to fraction form
    290,573.32/400,829.28 = 270,023.35/x
  3. Step 3: Cross multiply
    290,573.32x = 400,829.28 × 270,023.35
  4. Step 4: Simplify right side
    290,573.32x = 108,233,264,963.69
  5. Step 5: Solve for x
    x = 108,233,264,963.69/290,573.32
  6. Step 6: Final answer
    x = 372,481.77

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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.