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Finding the Fourth Proportional to 447,125.28, 670,754.64 and 147,637.52

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Solution

The fourth proportional to 447,125.28, 670,754.64 and 147,637.52 is: 221,478.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,125.28 : 670,754.64 = 147,637.52 : x
  2. Step 2: Convert to fraction form
    447,125.28/670,754.64 = 147,637.52/x
  3. Step 3: Cross multiply
    447,125.28x = 670,754.64 × 147,637.52
  4. Step 4: Simplify right side
    447,125.28x = 99,028,551,578.09
  5. Step 5: Solve for x
    x = 99,028,551,578.09/447,125.28
  6. Step 6: Final answer
    x = 221,478.31

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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.