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Finding the Fourth Proportional to 290,960.30, 436,440.98 and 91,296.02

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Solution

The fourth proportional to 290,960.30, 436,440.98 and 91,296.02 is: 136,944.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,960.30 : 436,440.98 = 91,296.02 : x
  2. Step 2: Convert to fraction form
    290,960.30/436,440.98 = 91,296.02/x
  3. Step 3: Cross multiply
    290,960.30x = 436,440.98 × 91,296.02
  4. Step 4: Simplify right side
    290,960.30x = 39,845,323,982.42
  5. Step 5: Solve for x
    x = 39,845,323,982.42/290,960.30
  6. Step 6: Final answer
    x = 136,944.19

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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.