Home / 285,463.41-393,921.03-156,401.70

Finding the Fourth Proportional to 285,463.41, 393,921.03 and 156,401.70

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Solution

The fourth proportional to 285,463.41, 393,921.03 and 156,401.70 is: 215,824.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,463.41 : 393,921.03 = 156,401.70 : x
  2. Step 2: Convert to fraction form
    285,463.41/393,921.03 = 156,401.70/x
  3. Step 3: Cross multiply
    285,463.41x = 393,921.03 × 156,401.70
  4. Step 4: Simplify right side
    285,463.41x = 61,609,919,941.70
  5. Step 5: Solve for x
    x = 61,609,919,941.70/285,463.41
  6. Step 6: Final answer
    x = 215,824.23

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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.