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Finding the Fourth Proportional to 369,187.75, 509,479.32 and 199,421.92

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Solution

The fourth proportional to 369,187.75, 509,479.32 and 199,421.92 is: 275,202.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,187.75 : 509,479.32 = 199,421.92 : x
  2. Step 2: Convert to fraction form
    369,187.75/509,479.32 = 199,421.92/x
  3. Step 3: Cross multiply
    369,187.75x = 509,479.32 × 199,421.92
  4. Step 4: Simplify right side
    369,187.75x = 101,601,344,194.69
  5. Step 5: Solve for x
    x = 101,601,344,194.69/369,187.75
  6. Step 6: Final answer
    x = 275,202.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.