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Finding the Fourth Proportional to 339,421.38, 468,386.35 and 203,530.31

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Solution

The fourth proportional to 339,421.38, 468,386.35 and 203,530.31 is: 280,862.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,421.38 : 468,386.35 = 203,530.31 : x
  2. Step 2: Convert to fraction form
    339,421.38/468,386.35 = 203,530.31/x
  3. Step 3: Cross multiply
    339,421.38x = 468,386.35 × 203,530.31
  4. Step 4: Simplify right side
    339,421.38x = 95,330,818,506.44
  5. Step 5: Solve for x
    x = 95,330,818,506.44/339,421.38
  6. Step 6: Final answer
    x = 280,862.74

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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.