Home / 285,138.85-393,504.02-157,814.41

Finding the Fourth Proportional to 285,138.85, 393,504.02 and 157,814.41

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Solution

The fourth proportional to 285,138.85, 393,504.02 and 157,814.41 is: 217,790.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,138.85 : 393,504.02 = 157,814.41 : x
  2. Step 2: Convert to fraction form
    285,138.85/393,504.02 = 157,814.41/x
  3. Step 3: Cross multiply
    285,138.85x = 393,504.02 × 157,814.41
  4. Step 4: Simplify right side
    285,138.85x = 62,100,604,748.93
  5. Step 5: Solve for x
    x = 62,100,604,748.93/285,138.85
  6. Step 6: Final answer
    x = 217,790.75

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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.