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Finding the Fourth Proportional to 290,777.06, 436,165.04 and 91,112.74

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Solution

The fourth proportional to 290,777.06, 436,165.04 and 91,112.74 is: 136,668.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,777.06 : 436,165.04 = 91,112.74 : x
  2. Step 2: Convert to fraction form
    290,777.06/436,165.04 = 91,112.74/x
  3. Step 3: Cross multiply
    290,777.06x = 436,165.04 × 91,112.74
  4. Step 4: Simplify right side
    290,777.06x = 39,740,191,886.61
  5. Step 5: Solve for x
    x = 39,740,191,886.61/290,777.06
  6. Step 6: Final answer
    x = 136,668.94

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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.