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Finding the Fourth Proportional to 339,751.20, 509,281.20 and 199,437.60

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Solution

The fourth proportional to 339,751.20, 509,281.20 and 199,437.60 is: 298,953.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,751.20 : 509,281.20 = 199,437.60 : x
  2. Step 2: Convert to fraction form
    339,751.20/509,281.20 = 199,437.60/x
  3. Step 3: Cross multiply
    339,751.20x = 509,281.20 × 199,437.60
  4. Step 4: Simplify right side
    339,751.20x = 101,569,820,253.12
  5. Step 5: Solve for x
    x = 101,569,820,253.12/339,751.20
  6. Step 6: Final answer
    x = 298,953.53

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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.