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Finding the Fourth Proportional to 370,667.77, 511,515.97 and 209,517.17

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Solution

The fourth proportional to 370,667.77, 511,515.97 and 209,517.17 is: 289,130.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,667.77 : 511,515.97 = 209,517.17 : x
  2. Step 2: Convert to fraction form
    370,667.77/511,515.97 = 209,517.17/x
  3. Step 3: Cross multiply
    370,667.77x = 511,515.97 × 209,517.17
  4. Step 4: Simplify right side
    370,667.77x = 107,171,375,362.83
  5. Step 5: Solve for x
    x = 107,171,375,362.83/370,667.77
  6. Step 6: Final answer
    x = 289,130.55

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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.