Home / 285,214.57-393,600.78-156,150.90

Finding the Fourth Proportional to 285,214.57, 393,600.78 and 156,150.90

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Solution

The fourth proportional to 285,214.57, 393,600.78 and 156,150.90 is: 215,490.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,214.57 : 393,600.78 = 156,150.90 : x
  2. Step 2: Convert to fraction form
    285,214.57/393,600.78 = 156,150.90/x
  3. Step 3: Cross multiply
    285,214.57x = 393,600.78 × 156,150.90
  4. Step 4: Simplify right side
    285,214.57x = 61,461,116,037.70
  5. Step 5: Solve for x
    x = 61,461,116,037.70/285,214.57
  6. Step 6: Final answer
    x = 215,490.80

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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.