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Finding the Fourth Proportional to 230,913.80, 346,370.70 and 141,878.60

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Solution

The fourth proportional to 230,913.80, 346,370.70 and 141,878.60 is: 212,817.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,913.80 : 346,370.70 = 141,878.60 : x
  2. Step 2: Convert to fraction form
    230,913.80/346,370.70 = 141,878.60/x
  3. Step 3: Cross multiply
    230,913.80x = 346,370.70 × 141,878.60
  4. Step 4: Simplify right side
    230,913.80x = 49,142,589,997.02
  5. Step 5: Solve for x
    x = 49,142,589,997.02/230,913.80
  6. Step 6: Final answer
    x = 212,817.90

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1.5x scale

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.