Home / 285,141.06-393,489.90-157,813.92

Finding the Fourth Proportional to 285,141.06, 393,489.90 and 157,813.92

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Solution

The fourth proportional to 285,141.06, 393,489.90 and 157,813.92 is: 217,780.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,141.06 : 393,489.90 = 157,813.92 : x
  2. Step 2: Convert to fraction form
    285,141.06/393,489.90 = 157,813.92/x
  3. Step 3: Cross multiply
    285,141.06x = 393,489.90 × 157,813.92
  4. Step 4: Simplify right side
    285,141.06x = 62,098,183,599.41
  5. Step 5: Solve for x
    x = 62,098,183,599.41/285,141.06
  6. Step 6: Final answer
    x = 217,780.57

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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.