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Finding the Fourth Proportional to 291,182.36, 436,817.61 and 91,483.95

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Solution

The fourth proportional to 291,182.36, 436,817.61 and 91,483.95 is: 137,239.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,182.36 : 436,817.61 = 91,483.95 : x
  2. Step 2: Convert to fraction form
    291,182.36/436,817.61 = 91,483.95/x
  3. Step 3: Cross multiply
    291,182.36x = 436,817.61 × 91,483.95
  4. Step 4: Simplify right side
    291,182.36x = 39,961,799,573.33
  5. Step 5: Solve for x
    x = 39,961,799,573.33/291,182.36
  6. Step 6: Final answer
    x = 137,239.77

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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.