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Finding the Fourth Proportional to 290,732.77, 436,268.36 and 122,240.89

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Solution

The fourth proportional to 290,732.77, 436,268.36 and 122,240.89 is: 183,432.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,732.77 : 436,268.36 = 122,240.89 : x
  2. Step 2: Convert to fraction form
    290,732.77/436,268.36 = 122,240.89/x
  3. Step 3: Cross multiply
    290,732.77x = 436,268.36 × 122,240.89
  4. Step 4: Simplify right side
    290,732.77x = 53,329,831,994.04
  5. Step 5: Solve for x
    x = 53,329,831,994.04/290,732.77
  6. Step 6: Final answer
    x = 183,432.48

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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.