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Finding the Fourth Proportional to 290,937.51, 436,406.76 and 91,273.62

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Solution

The fourth proportional to 290,937.51, 436,406.76 and 91,273.62 is: 136,910.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,937.51 : 436,406.76 = 91,273.62 : x
  2. Step 2: Convert to fraction form
    290,937.51/436,406.76 = 91,273.62/x
  3. Step 3: Cross multiply
    290,937.51x = 436,406.76 × 91,273.62
  4. Step 4: Simplify right side
    290,937.51x = 39,832,424,777.67
  5. Step 5: Solve for x
    x = 39,832,424,777.67/290,937.51
  6. Step 6: Final answer
    x = 136,910.59

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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.