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Finding the Fourth Proportional to 290,777.40, 436,164.66 and 77,544.84

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Solution

The fourth proportional to 290,777.40, 436,164.66 and 77,544.84 is: 116,316.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,777.40 : 436,164.66 = 77,544.84 : x
  2. Step 2: Convert to fraction form
    290,777.40/436,164.66 = 77,544.84/x
  3. Step 3: Cross multiply
    290,777.40x = 436,164.66 × 77,544.84
  4. Step 4: Simplify right side
    290,777.40x = 33,822,318,773.35
  5. Step 5: Solve for x
    x = 33,822,318,773.35/290,777.40
  6. Step 6: Final answer
    x = 116,316.88

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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.