Home / 285,145.33-393,499.06-157,816.57

Finding the Fourth Proportional to 285,145.33, 393,499.06 and 157,816.57

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Solution

The fourth proportional to 285,145.33, 393,499.06 and 157,816.57 is: 217,786.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,145.33 : 393,499.06 = 157,816.57 : x
  2. Step 2: Convert to fraction form
    285,145.33/393,499.06 = 157,816.57/x
  3. Step 3: Cross multiply
    285,145.33x = 393,499.06 × 157,816.57
  4. Step 4: Simplify right side
    285,145.33x = 62,100,671,947.42
  5. Step 5: Solve for x
    x = 62,100,671,947.42/285,145.33
  6. Step 6: Final answer
    x = 217,786.04

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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.