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Finding the Fourth Proportional to 290,340, 435,537.48 and 112,860.72

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Solution

The fourth proportional to 290,340, 435,537.48 and 112,860.72 is: 169,301.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,340 : 435,537.48 = 112,860.72 : x
  2. Step 2: Convert to fraction form
    290,340/435,537.48 = 112,860.72/x
  3. Step 3: Cross multiply
    290,340x = 435,537.48 × 112,860.72
  4. Step 4: Simplify right side
    290,340x = 49,155,073,579.79
  5. Step 5: Solve for x
    x = 49,155,073,579.79/290,340
  6. Step 6: Final answer
    x = 169,301.76

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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.