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Finding the Fourth Proportional to 243,965.16, 364,160.88 and 215,203.68

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Solution

The fourth proportional to 243,965.16, 364,160.88 and 215,203.68 is: 321,229.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,965.16 : 364,160.88 = 215,203.68 : x
  2. Step 2: Convert to fraction form
    243,965.16/364,160.88 = 215,203.68/x
  3. Step 3: Cross multiply
    243,965.16x = 364,160.88 × 215,203.68
  4. Step 4: Simplify right side
    243,965.16x = 78,368,761,488.04
  5. Step 5: Solve for x
    x = 78,368,761,488.04/243,965.16
  6. Step 6: Final answer
    x = 321,229.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.