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Finding the Fourth Proportional to 426,473.20, 639,418.20 and 201,941.20

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Solution

The fourth proportional to 426,473.20, 639,418.20 and 201,941.20 is: 302,773.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,473.20 : 639,418.20 = 201,941.20 : x
  2. Step 2: Convert to fraction form
    426,473.20/639,418.20 = 201,941.20/x
  3. Step 3: Cross multiply
    426,473.20x = 639,418.20 × 201,941.20
  4. Step 4: Simplify right side
    426,473.20x = 129,124,878,609.84
  5. Step 5: Solve for x
    x = 129,124,878,609.84/426,473.20
  6. Step 6: Final answer
    x = 302,773.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.