Home / 283,640.03-391,423.23-156,315.63

Finding the Fourth Proportional to 283,640.03, 391,423.23 and 156,315.63

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Solution

The fourth proportional to 283,640.03, 391,423.23 and 156,315.63 is: 215,715.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,640.03 : 391,423.23 = 156,315.63 : x
  2. Step 2: Convert to fraction form
    283,640.03/391,423.23 = 156,315.63/x
  3. Step 3: Cross multiply
    283,640.03x = 391,423.23 × 156,315.63
  4. Step 4: Simplify right side
    283,640.03x = 61,185,568,794.08
  5. Step 5: Solve for x
    x = 61,185,568,794.08/283,640.03
  6. Step 6: Final answer
    x = 215,715.56

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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.