Home / 283,830.39-391,685.54-156,506.31

Finding the Fourth Proportional to 283,830.39, 391,685.54 and 156,506.31

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Solution

The fourth proportional to 283,830.39, 391,685.54 and 156,506.31 is: 215,978.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,830.39 : 391,685.54 = 156,506.31 : x
  2. Step 2: Convert to fraction form
    283,830.39/391,685.54 = 156,506.31/x
  3. Step 3: Cross multiply
    283,830.39x = 391,685.54 × 156,506.31
  4. Step 4: Simplify right side
    283,830.39x = 61,301,257,763.23
  5. Step 5: Solve for x
    x = 61,301,257,763.23/283,830.39
  6. Step 6: Final answer
    x = 215,978.49

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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.