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Finding the Fourth Proportional to 230,120.72, 345,220.44 and 105,472.40

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Solution

The fourth proportional to 230,120.72, 345,220.44 and 105,472.40 is: 158,226.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,120.72 : 345,220.44 = 105,472.40 : x
  2. Step 2: Convert to fraction form
    230,120.72/345,220.44 = 105,472.40/x
  3. Step 3: Cross multiply
    230,120.72x = 345,220.44 × 105,472.40
  4. Step 4: Simplify right side
    230,120.72x = 36,411,228,335.86
  5. Step 5: Solve for x
    x = 36,411,228,335.86/230,120.72
  6. Step 6: Final answer
    x = 158,226.64

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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.