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Finding the Fourth Proportional to 201,328.40, 301,800.60 and 74,934.80

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Solution

The fourth proportional to 201,328.40, 301,800.60 and 74,934.80 is: 112,330.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,328.40 : 301,800.60 = 74,934.80 : x
  2. Step 2: Convert to fraction form
    201,328.40/301,800.60 = 74,934.80/x
  3. Step 3: Cross multiply
    201,328.40x = 301,800.60 × 74,934.80
  4. Step 4: Simplify right side
    201,328.40x = 22,615,367,600.88
  5. Step 5: Solve for x
    x = 22,615,367,600.88/201,328.40
  6. Step 6: Final answer
    x = 112,330.74

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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.