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Finding the Fourth Proportional to 484,336.40, 726,615.16 and 147,424.79

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Solution

The fourth proportional to 484,336.40, 726,615.16 and 147,424.79 is: 221,170.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,336.40 : 726,615.16 = 147,424.79 : x
  2. Step 2: Convert to fraction form
    484,336.40/726,615.16 = 147,424.79/x
  3. Step 3: Cross multiply
    484,336.40x = 726,615.16 × 147,424.79
  4. Step 4: Simplify right side
    484,336.40x = 107,121,088,821.79
  5. Step 5: Solve for x
    x = 107,121,088,821.79/484,336.40
  6. Step 6: Final answer
    x = 221,170.84

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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.