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Finding the Fourth Proportional to 339,118.20, 508,677.30 and 260,628.60

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Solution

The fourth proportional to 339,118.20, 508,677.30 and 260,628.60 is: 390,942.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,118.20 : 508,677.30 = 260,628.60 : x
  2. Step 2: Convert to fraction form
    339,118.20/508,677.30 = 260,628.60/x
  3. Step 3: Cross multiply
    339,118.20x = 508,677.30 × 260,628.60
  4. Step 4: Simplify right side
    339,118.20x = 132,575,852,550.78
  5. Step 5: Solve for x
    x = 132,575,852,550.78/339,118.20
  6. Step 6: Final answer
    x = 390,942.90

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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.