Home / 285,276.27-393,686.10-156,212.69

Finding the Fourth Proportional to 285,276.27, 393,686.10 and 156,212.69

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Solution

The fourth proportional to 285,276.27, 393,686.10 and 156,212.69 is: 215,576.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,276.27 : 393,686.10 = 156,212.69 : x
  2. Step 2: Convert to fraction form
    285,276.27/393,686.10 = 156,212.69/x
  3. Step 3: Cross multiply
    285,276.27x = 393,686.10 × 156,212.69
  4. Step 4: Simplify right side
    285,276.27x = 61,498,764,696.61
  5. Step 5: Solve for x
    x = 61,498,764,696.61/285,276.27
  6. Step 6: Final answer
    x = 215,576.17

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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.