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Finding the Fourth Proportional to 230,735.20, 346,070.40 and 72,979.60

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Solution

The fourth proportional to 230,735.20, 346,070.40 and 72,979.60 is: 109,459.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,735.20 : 346,070.40 = 72,979.60 : x
  2. Step 2: Convert to fraction form
    230,735.20/346,070.40 = 72,979.60/x
  3. Step 3: Cross multiply
    230,735.20x = 346,070.40 × 72,979.60
  4. Step 4: Simplify right side
    230,735.20x = 25,256,079,363.84
  5. Step 5: Solve for x
    x = 25,256,079,363.84/230,735.20
  6. Step 6: Final answer
    x = 109,459.15

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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.