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Finding the Fourth Proportional to 423,097.39, 634,739.52 and 156,857.92

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Solution

The fourth proportional to 423,097.39, 634,739.52 and 156,857.92 is: 235,321.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,097.39 : 634,739.52 = 156,857.92 : x
  2. Step 2: Convert to fraction form
    423,097.39/634,739.52 = 156,857.92/x
  3. Step 3: Cross multiply
    423,097.39x = 634,739.52 × 156,857.92
  4. Step 4: Simplify right side
    423,097.39x = 99,563,919,850.37
  5. Step 5: Solve for x
    x = 99,563,919,850.37/423,097.39
  6. Step 6: Final answer
    x = 235,321.52

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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.