Home / 285,192.15-393,563.70-156,142.35

Finding the Fourth Proportional to 285,192.15, 393,563.70 and 156,142.35

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Solution

The fourth proportional to 285,192.15, 393,563.70 and 156,142.35 is: 215,475.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,192.15 : 393,563.70 = 156,142.35 : x
  2. Step 2: Convert to fraction form
    285,192.15/393,563.70 = 156,142.35/x
  3. Step 3: Cross multiply
    285,192.15x = 393,563.70 × 156,142.35
  4. Step 4: Simplify right side
    285,192.15x = 61,451,960,992.70
  5. Step 5: Solve for x
    x = 61,451,960,992.70/285,192.15
  6. Step 6: Final answer
    x = 215,475.64

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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.