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Finding the Fourth Proportional to 307,759.84, 424,900.59 and 198,921.15

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Solution

The fourth proportional to 307,759.84, 424,900.59 and 198,921.15 is: 274,635.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,759.84 : 424,900.59 = 198,921.15 : x
  2. Step 2: Convert to fraction form
    307,759.84/424,900.59 = 198,921.15/x
  3. Step 3: Cross multiply
    307,759.84x = 424,900.59 × 198,921.15
  4. Step 4: Simplify right side
    307,759.84x = 84,521,713,252.52
  5. Step 5: Solve for x
    x = 84,521,713,252.52/307,759.84
  6. Step 6: Final answer
    x = 274,635.29

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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.