Home / 285,305.86-393,722.07-157,981.46

Finding the Fourth Proportional to 285,305.86, 393,722.07 and 157,981.46

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Solution

The fourth proportional to 285,305.86, 393,722.07 and 157,981.46 is: 218,014.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,305.86 : 393,722.07 = 157,981.46 : x
  2. Step 2: Convert to fraction form
    285,305.86/393,722.07 = 157,981.46/x
  3. Step 3: Cross multiply
    285,305.86x = 393,722.07 × 157,981.46
  4. Step 4: Simplify right side
    285,305.86x = 62,200,784,891.78
  5. Step 5: Solve for x
    x = 62,200,784,891.78/285,305.86
  6. Step 6: Final answer
    x = 218,014.40

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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.