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Finding the Fourth Proportional to 230,012.70, 345,029.85 and 72,246.30

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Solution

The fourth proportional to 230,012.70, 345,029.85 and 72,246.30 is: 108,372.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,012.70 : 345,029.85 = 72,246.30 : x
  2. Step 2: Convert to fraction form
    230,012.70/345,029.85 = 72,246.30/x
  3. Step 3: Cross multiply
    230,012.70x = 345,029.85 × 72,246.30
  4. Step 4: Simplify right side
    230,012.70x = 24,927,130,052.06
  5. Step 5: Solve for x
    x = 24,927,130,052.06/230,012.70
  6. Step 6: Final answer
    x = 108,372.84

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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.