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Finding the Fourth Proportional to 369,087.61, 509,340.90 and 199,321.74

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Solution

The fourth proportional to 369,087.61, 509,340.90 and 199,321.74 is: 275,063.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,087.61 : 509,340.90 = 199,321.74 : x
  2. Step 2: Convert to fraction form
    369,087.61/509,340.90 = 199,321.74/x
  3. Step 3: Cross multiply
    369,087.61x = 509,340.90 × 199,321.74
  4. Step 4: Simplify right side
    369,087.61x = 101,522,710,897.85
  5. Step 5: Solve for x
    x = 101,522,710,897.85/369,087.61
  6. Step 6: Final answer
    x = 275,063.99

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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.