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Finding the Fourth Proportional to 230,426.01, 345,639 and 72,670.41

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Solution

The fourth proportional to 230,426.01, 345,639 and 72,670.41 is: 109,005.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,426.01 : 345,639 = 72,670.41 : x
  2. Step 2: Convert to fraction form
    230,426.01/345,639 = 72,670.41/x
  3. Step 3: Cross multiply
    230,426.01x = 345,639 × 72,670.41
  4. Step 4: Simplify right side
    230,426.01x = 25,117,727,841.99
  5. Step 5: Solve for x
    x = 25,117,727,841.99/230,426.01
  6. Step 6: Final answer
    x = 109,005.61

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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.