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Finding the Fourth Proportional to 339,291.60, 508,937.40 and 313,630.80

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Solution

The fourth proportional to 339,291.60, 508,937.40 and 313,630.80 is: 470,446.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,291.60 : 508,937.40 = 313,630.80 : x
  2. Step 2: Convert to fraction form
    339,291.60/508,937.40 = 313,630.80/x
  3. Step 3: Cross multiply
    339,291.60x = 508,937.40 × 313,630.80
  4. Step 4: Simplify right side
    339,291.60x = 159,618,443,911.92
  5. Step 5: Solve for x
    x = 159,618,443,911.92/339,291.60
  6. Step 6: Final answer
    x = 470,446.20

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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.