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Finding the Fourth Proportional to 627,642.66, 941,455.80 and 154,332.12

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Solution

The fourth proportional to 627,642.66, 941,455.80 and 154,332.12 is: 231,496.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,642.66 : 941,455.80 = 154,332.12 : x
  2. Step 2: Convert to fraction form
    627,642.66/941,455.80 = 154,332.12/x
  3. Step 3: Cross multiply
    627,642.66x = 941,455.80 × 154,332.12
  4. Step 4: Simplify right side
    627,642.66x = 145,296,869,500.30
  5. Step 5: Solve for x
    x = 145,296,869,500.30/627,642.66
  6. Step 6: Final answer
    x = 231,496.17

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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.