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Finding the Fourth Proportional to 290,398.88, 435,711 and 113,030.48

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Solution

The fourth proportional to 290,398.88, 435,711 and 113,030.48 is: 169,589.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,398.88 : 435,711 = 113,030.48 : x
  2. Step 2: Convert to fraction form
    290,398.88/435,711 = 113,030.48/x
  3. Step 3: Cross multiply
    290,398.88x = 435,711 × 113,030.48
  4. Step 4: Simplify right side
    290,398.88x = 49,248,623,471.28
  5. Step 5: Solve for x
    x = 49,248,623,471.28/290,398.88
  6. Step 6: Final answer
    x = 169,589.58

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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.