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Finding the Fourth Proportional to 291,391.83, 436,972.83 and 141,587.80

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Solution

The fourth proportional to 291,391.83, 436,972.83 and 141,587.80 is: 212,325.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,391.83 : 436,972.83 = 141,587.80 : x
  2. Step 2: Convert to fraction form
    291,391.83/436,972.83 = 141,587.80/x
  3. Step 3: Cross multiply
    291,391.83x = 436,972.83 × 141,587.80
  4. Step 4: Simplify right side
    291,391.83x = 61,870,020,036.09
  5. Step 5: Solve for x
    x = 61,870,020,036.09/291,391.83
  6. Step 6: Final answer
    x = 212,325.86

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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.