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Finding the Fourth Proportional to 290,607.60, 435,910.40 and 77,375.52

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Solution

The fourth proportional to 290,607.60, 435,910.40 and 77,375.52 is: 116,063.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,607.60 : 435,910.40 = 77,375.52 : x
  2. Step 2: Convert to fraction form
    290,607.60/435,910.40 = 77,375.52/x
  3. Step 3: Cross multiply
    290,607.60x = 435,910.40 × 77,375.52
  4. Step 4: Simplify right side
    290,607.60x = 33,728,793,873.41
  5. Step 5: Solve for x
    x = 33,728,793,873.41/290,607.60
  6. Step 6: Final answer
    x = 116,063.01

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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.