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Finding the Fourth Proportional to 301,216.60, 451,678.98 and 90,815.32

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Solution

The fourth proportional to 301,216.60, 451,678.98 and 90,815.32 is: 136,178.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,216.60 : 451,678.98 = 90,815.32 : x
  2. Step 2: Convert to fraction form
    301,216.60/451,678.98 = 90,815.32/x
  3. Step 3: Cross multiply
    301,216.60x = 451,678.98 × 90,815.32
  4. Step 4: Simplify right side
    301,216.60x = 41,019,371,105.97
  5. Step 5: Solve for x
    x = 41,019,371,105.97/301,216.60
  6. Step 6: Final answer
    x = 136,178.99

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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.