Home / 285,439.50-393,906.51-158,123.34

Finding the Fourth Proportional to 285,439.50, 393,906.51 and 158,123.34

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Solution

The fourth proportional to 285,439.50, 393,906.51 and 158,123.34 is: 218,210.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,439.50 : 393,906.51 = 158,123.34 : x
  2. Step 2: Convert to fraction form
    285,439.50/393,906.51 = 158,123.34/x
  3. Step 3: Cross multiply
    285,439.50x = 393,906.51 × 158,123.34
  4. Step 4: Simplify right side
    285,439.50x = 62,285,813,008.94
  5. Step 5: Solve for x
    x = 62,285,813,008.94/285,439.50
  6. Step 6: Final answer
    x = 218,210.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.