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Finding the Fourth Proportional to 303,930.60, 455,239.80 and 197,642.40

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Solution

The fourth proportional to 303,930.60, 455,239.80 and 197,642.40 is: 296,036.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,930.60 : 455,239.80 = 197,642.40 : x
  2. Step 2: Convert to fraction form
    303,930.60/455,239.80 = 197,642.40/x
  3. Step 3: Cross multiply
    303,930.60x = 455,239.80 × 197,642.40
  4. Step 4: Simplify right side
    303,930.60x = 89,974,686,647.52
  5. Step 5: Solve for x
    x = 89,974,686,647.52/303,930.60
  6. Step 6: Final answer
    x = 296,036.95

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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.