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Finding the Fourth Proportional to 484,419.15, 726,544.89 and 147,378.15

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Solution

The fourth proportional to 484,419.15, 726,544.89 and 147,378.15 is: 221,041.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,419.15 : 726,544.89 = 147,378.15 : x
  2. Step 2: Convert to fraction form
    484,419.15/726,544.89 = 147,378.15/x
  3. Step 3: Cross multiply
    484,419.15x = 726,544.89 × 147,378.15
  4. Step 4: Simplify right side
    484,419.15x = 107,076,841,780.15
  5. Step 5: Solve for x
    x = 107,076,841,780.15/484,419.15
  6. Step 6: Final answer
    x = 221,041.72

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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.