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Finding the Fourth Proportional to 403,249.40, 604,874.10 and 309,937.40

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Solution

The fourth proportional to 403,249.40, 604,874.10 and 309,937.40 is: 464,906.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,249.40 : 604,874.10 = 309,937.40 : x
  2. Step 2: Convert to fraction form
    403,249.40/604,874.10 = 309,937.40/x
  3. Step 3: Cross multiply
    403,249.40x = 604,874.10 × 309,937.40
  4. Step 4: Simplify right side
    403,249.40x = 187,473,105,881.34
  5. Step 5: Solve for x
    x = 187,473,105,881.34/403,249.40
  6. Step 6: Final answer
    x = 464,906.10

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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.