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Finding the Fourth Proportional to 441,677.21, 662,621.51 and 142,185.78

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Solution

The fourth proportional to 441,677.21, 662,621.51 and 142,185.78 is: 213,312.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,677.21 : 662,621.51 = 142,185.78 : x
  2. Step 2: Convert to fraction form
    441,677.21/662,621.51 = 142,185.78/x
  3. Step 3: Cross multiply
    441,677.21x = 662,621.51 × 142,185.78
  4. Step 4: Simplify right side
    441,677.21x = 94,215,356,599.59
  5. Step 5: Solve for x
    x = 94,215,356,599.59/441,677.21
  6. Step 6: Final answer
    x = 213,312.70

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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.