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Finding the Fourth Proportional to 363,896.90, 545,699.55 and 127,117.70

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Solution

The fourth proportional to 363,896.90, 545,699.55 and 127,117.70 is: 190,625.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,896.90 : 545,699.55 = 127,117.70 : x
  2. Step 2: Convert to fraction form
    363,896.90/545,699.55 = 127,117.70/x
  3. Step 3: Cross multiply
    363,896.90x = 545,699.55 × 127,117.70
  4. Step 4: Simplify right side
    363,896.90x = 69,368,071,687.04
  5. Step 5: Solve for x
    x = 69,368,071,687.04/363,896.90
  6. Step 6: Final answer
    x = 190,625.62

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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.