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Finding the Fourth Proportional to 484,437.40, 726,137.70 and 218,152.60

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Solution

The fourth proportional to 484,437.40, 726,137.70 and 218,152.60 is: 326,995.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,437.40 : 726,137.70 = 218,152.60 : x
  2. Step 2: Convert to fraction form
    484,437.40/726,137.70 = 218,152.60/x
  3. Step 3: Cross multiply
    484,437.40x = 726,137.70 × 218,152.60
  4. Step 4: Simplify right side
    484,437.40x = 158,408,827,213.02
  5. Step 5: Solve for x
    x = 158,408,827,213.02/484,437.40
  6. Step 6: Final answer
    x = 326,995.45

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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.