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Finding the Fourth Proportional to 339,881.40, 509,822.10 and 302,556.60

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Solution

The fourth proportional to 339,881.40, 509,822.10 and 302,556.60 is: 453,834.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,881.40 : 509,822.10 = 302,556.60 : x
  2. Step 2: Convert to fraction form
    339,881.40/509,822.10 = 302,556.60/x
  3. Step 3: Cross multiply
    339,881.40x = 509,822.10 × 302,556.60
  4. Step 4: Simplify right side
    339,881.40x = 154,250,041,180.86
  5. Step 5: Solve for x
    x = 154,250,041,180.86/339,881.40
  6. Step 6: Final answer
    x = 453,834.90

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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.