Home / 285,145.18-393,437.37-170,406.61

Finding the Fourth Proportional to 285,145.18, 393,437.37 and 170,406.61

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Solution

The fourth proportional to 285,145.18, 393,437.37 and 170,406.61 is: 235,123.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,145.18 : 393,437.37 = 170,406.61 : x
  2. Step 2: Convert to fraction form
    285,145.18/393,437.37 = 170,406.61/x
  3. Step 3: Cross multiply
    285,145.18x = 393,437.37 × 170,406.61
  4. Step 4: Simplify right side
    285,145.18x = 67,044,328,469.02
  5. Step 5: Solve for x
    x = 67,044,328,469.02/285,145.18
  6. Step 6: Final answer
    x = 235,123.49

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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.