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Finding the Fourth Proportional to 381,605.40, 572,408.10 and 334,949.40

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Solution

The fourth proportional to 381,605.40, 572,408.10 and 334,949.40 is: 502,424.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,605.40 : 572,408.10 = 334,949.40 : x
  2. Step 2: Convert to fraction form
    381,605.40/572,408.10 = 334,949.40/x
  3. Step 3: Cross multiply
    381,605.40x = 572,408.10 × 334,949.40
  4. Step 4: Simplify right side
    381,605.40x = 191,727,749,650.14
  5. Step 5: Solve for x
    x = 191,727,749,650.14/381,605.40
  6. Step 6: Final answer
    x = 502,424.10

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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.