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Finding the Fourth Proportional to 339,740.10, 509,610.15 and 240,012.90

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Solution

The fourth proportional to 339,740.10, 509,610.15 and 240,012.90 is: 360,019.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,740.10 : 509,610.15 = 240,012.90 : x
  2. Step 2: Convert to fraction form
    339,740.10/509,610.15 = 240,012.90/x
  3. Step 3: Cross multiply
    339,740.10x = 509,610.15 × 240,012.90
  4. Step 4: Simplify right side
    339,740.10x = 122,313,009,970.94
  5. Step 5: Solve for x
    x = 122,313,009,970.94/339,740.10
  6. Step 6: Final answer
    x = 360,019.35

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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.