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Finding the Fourth Proportional to 290,163.32, 435,264.98 and 121,513.84

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Solution

The fourth proportional to 290,163.32, 435,264.98 and 121,513.84 is: 182,279.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,163.32 : 435,264.98 = 121,513.84 : x
  2. Step 2: Convert to fraction form
    290,163.32/435,264.98 = 121,513.84/x
  3. Step 3: Cross multiply
    290,163.32x = 435,264.98 × 121,513.84
  4. Step 4: Simplify right side
    290,163.32x = 52,890,719,137.32
  5. Step 5: Solve for x
    x = 52,890,719,137.32/290,163.32
  6. Step 6: Final answer
    x = 182,279.14

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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.