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Finding the Fourth Proportional to 279,221.48, 385,326.18 and 151,897.64

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Solution

The fourth proportional to 279,221.48, 385,326.18 and 151,897.64 is: 209,619.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,221.48 : 385,326.18 = 151,897.64 : x
  2. Step 2: Convert to fraction form
    279,221.48/385,326.18 = 151,897.64/x
  3. Step 3: Cross multiply
    279,221.48x = 385,326.18 × 151,897.64
  4. Step 4: Simplify right side
    279,221.48x = 58,530,137,372.22
  5. Step 5: Solve for x
    x = 58,530,137,372.22/279,221.48
  6. Step 6: Final answer
    x = 209,619.04

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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.