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Finding the Fourth Proportional to 339,959.20, 510,011.70 and 103,325.80

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Solution

The fourth proportional to 339,959.20, 510,011.70 and 103,325.80 is: 155,010.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,959.20 : 510,011.70 = 103,325.80 : x
  2. Step 2: Convert to fraction form
    339,959.20/510,011.70 = 103,325.80/x
  3. Step 3: Cross multiply
    339,959.20x = 510,011.70 × 103,325.80
  4. Step 4: Simplify right side
    339,959.20x = 52,697,366,911.86
  5. Step 5: Solve for x
    x = 52,697,366,911.86/339,959.20
  6. Step 6: Final answer
    x = 155,010.86

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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.