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Finding the Fourth Proportional to 245,891.66, 339,362.82 and 138,482.69

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Solution

The fourth proportional to 245,891.66, 339,362.82 and 138,482.69 is: 191,124.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,891.66 : 339,362.82 = 138,482.69 : x
  2. Step 2: Convert to fraction form
    245,891.66/339,362.82 = 138,482.69/x
  3. Step 3: Cross multiply
    245,891.66x = 339,362.82 × 138,482.69
  4. Step 4: Simplify right side
    245,891.66x = 46,995,874,502.77
  5. Step 5: Solve for x
    x = 46,995,874,502.77/245,891.66
  6. Step 6: Final answer
    x = 191,124.32

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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.