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Finding the Fourth Proportional to 290,742.52, 436,282.98 and 122,250.64

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Solution

The fourth proportional to 290,742.52, 436,282.98 and 122,250.64 is: 183,447.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,742.52 : 436,282.98 = 122,250.64 : x
  2. Step 2: Convert to fraction form
    290,742.52/436,282.98 = 122,250.64/x
  3. Step 3: Cross multiply
    290,742.52x = 436,282.98 × 122,250.64
  4. Step 4: Simplify right side
    290,742.52x = 53,335,873,526.11
  5. Step 5: Solve for x
    x = 53,335,873,526.11/290,742.52
  6. Step 6: Final answer
    x = 183,447.10

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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.