Home / 283,640.54-391,421.97-156,316.25

Finding the Fourth Proportional to 283,640.54, 391,421.97 and 156,316.25

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Solution

The fourth proportional to 283,640.54, 391,421.97 and 156,316.25 is: 215,715.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,640.54 : 391,421.97 = 156,316.25 : x
  2. Step 2: Convert to fraction form
    283,640.54/391,421.97 = 156,316.25/x
  3. Step 3: Cross multiply
    283,640.54x = 391,421.97 × 156,316.25
  4. Step 4: Simplify right side
    283,640.54x = 61,185,614,518.01
  5. Step 5: Solve for x
    x = 61,185,614,518.01/283,640.54
  6. Step 6: Final answer
    x = 215,715.34

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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.