Home / 285,503.27-393,977.53-156,416.05

Finding the Fourth Proportional to 285,503.27, 393,977.53 and 156,416.05

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Solution

The fourth proportional to 285,503.27, 393,977.53 and 156,416.05 is: 215,844.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,503.27 : 393,977.53 = 156,416.05 : x
  2. Step 2: Convert to fraction form
    285,503.27/393,977.53 = 156,416.05/x
  3. Step 3: Cross multiply
    285,503.27x = 393,977.53 × 156,416.05
  4. Step 4: Simplify right side
    285,503.27x = 61,624,409,719.35
  5. Step 5: Solve for x
    x = 61,624,409,719.35/285,503.27
  6. Step 6: Final answer
    x = 215,844.85

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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.