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Finding the Fourth Proportional to 290,960.63, 436,440.91 and 80,598.57

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Solution

The fourth proportional to 290,960.63, 436,440.91 and 80,598.57 is: 120,897.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,960.63 : 436,440.91 = 80,598.57 : x
  2. Step 2: Convert to fraction form
    290,960.63/436,440.91 = 80,598.57/x
  3. Step 3: Cross multiply
    290,960.63x = 436,440.91 × 80,598.57
  4. Step 4: Simplify right side
    290,960.63x = 35,176,513,235.50
  5. Step 5: Solve for x
    x = 35,176,513,235.50/290,960.63
  6. Step 6: Final answer
    x = 120,897.85

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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.