Home / 285,023.27-393,331.55-157,698.56

Finding the Fourth Proportional to 285,023.27, 393,331.55 and 157,698.56

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Solution

The fourth proportional to 285,023.27, 393,331.55 and 157,698.56 is: 217,623.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,023.27 : 393,331.55 = 157,698.56 : x
  2. Step 2: Convert to fraction form
    285,023.27/393,331.55 = 157,698.56/x
  3. Step 3: Cross multiply
    285,023.27x = 393,331.55 × 157,698.56
  4. Step 4: Simplify right side
    285,023.27x = 62,027,819,232.40
  5. Step 5: Solve for x
    x = 62,027,819,232.40/285,023.27
  6. Step 6: Final answer
    x = 217,623.70

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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.