Home / 286,988.22-396,043.74-159,663.78

Finding the Fourth Proportional to 286,988.22, 396,043.74 and 159,663.78

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Solution

The fourth proportional to 286,988.22, 396,043.74 and 159,663.78 is: 220,336.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,988.22 : 396,043.74 = 159,663.78 : x
  2. Step 2: Convert to fraction form
    286,988.22/396,043.74 = 159,663.78/x
  3. Step 3: Cross multiply
    286,988.22x = 396,043.74 × 159,663.78
  4. Step 4: Simplify right side
    286,988.22x = 63,233,840,573.74
  5. Step 5: Solve for x
    x = 63,233,840,573.74/286,988.22
  6. Step 6: Final answer
    x = 220,336.01

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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.