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Finding the Fourth Proportional to 239,421, 330,164.26 and 203,221.29

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Solution

The fourth proportional to 239,421, 330,164.26 and 203,221.29 is: 280,244.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,421 : 330,164.26 = 203,221.29 : x
  2. Step 2: Convert to fraction form
    239,421/330,164.26 = 203,221.29/x
  3. Step 3: Cross multiply
    239,421x = 330,164.26 × 203,221.29
  4. Step 4: Simplify right side
    239,421x = 67,096,406,829.10
  5. Step 5: Solve for x
    x = 67,096,406,829.10/239,421
  6. Step 6: Final answer
    x = 280,244.45

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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.