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Finding the Fourth Proportional to 219,891.42, 303,482.73 and 139,326.44

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Solution

The fourth proportional to 219,891.42, 303,482.73 and 139,326.44 is: 192,291.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,891.42 : 303,482.73 = 139,326.44 : x
  2. Step 2: Convert to fraction form
    219,891.42/303,482.73 = 139,326.44/x
  3. Step 3: Cross multiply
    219,891.42x = 303,482.73 × 139,326.44
  4. Step 4: Simplify right side
    219,891.42x = 42,283,166,854.97
  5. Step 5: Solve for x
    x = 42,283,166,854.97/219,891.42
  6. Step 6: Final answer
    x = 192,291.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.