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Finding the Fourth Proportional to 290,772.37, 436,158.42 and 91,108.45

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Solution

The fourth proportional to 290,772.37, 436,158.42 and 91,108.45 is: 136,662.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,772.37 : 436,158.42 = 91,108.45 : x
  2. Step 2: Convert to fraction form
    290,772.37/436,158.42 = 91,108.45/x
  3. Step 3: Cross multiply
    290,772.37x = 436,158.42 × 91,108.45
  4. Step 4: Simplify right side
    290,772.37x = 39,737,717,600.65
  5. Step 5: Solve for x
    x = 39,737,717,600.65/290,772.37
  6. Step 6: Final answer
    x = 136,662.63

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1.5x scale

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.