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Finding the Fourth Proportional to 339,276.60, 508,914.90 and 313,615.80

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Solution

The fourth proportional to 339,276.60, 508,914.90 and 313,615.80 is: 470,423.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,276.60 : 508,914.90 = 313,615.80 : x
  2. Step 2: Convert to fraction form
    339,276.60/508,914.90 = 313,615.80/x
  3. Step 3: Cross multiply
    339,276.60x = 508,914.90 × 313,615.80
  4. Step 4: Simplify right side
    339,276.60x = 159,603,753,495.42
  5. Step 5: Solve for x
    x = 159,603,753,495.42/339,276.60
  6. Step 6: Final answer
    x = 470,423.70

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1.5x scale

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.