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Finding the Fourth Proportional to 640,912.19, 961,463.93 and 236,073.56

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Solution

The fourth proportional to 640,912.19, 961,463.93 and 236,073.56 is: 354,145.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,912.19 : 961,463.93 = 236,073.56 : x
  2. Step 2: Convert to fraction form
    640,912.19/961,463.93 = 236,073.56/x
  3. Step 3: Cross multiply
    640,912.19x = 961,463.93 × 236,073.56
  4. Step 4: Simplify right side
    640,912.19x = 226,976,206,779.00
  5. Step 5: Solve for x
    x = 226,976,206,779.00/640,912.19
  6. Step 6: Final answer
    x = 354,145.56

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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.