Home / 245,818.57-339,235.96-138,392.42

Finding the Fourth Proportional to 245,818.57, 339,235.96 and 138,392.42

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Solution

The fourth proportional to 245,818.57, 339,235.96 and 138,392.42 is: 190,985.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,818.57 : 339,235.96 = 138,392.42 : x
  2. Step 2: Convert to fraction form
    245,818.57/339,235.96 = 138,392.42/x
  3. Step 3: Cross multiply
    245,818.57x = 339,235.96 × 138,392.42
  4. Step 4: Simplify right side
    245,818.57x = 46,947,685,455.42
  5. Step 5: Solve for x
    x = 46,947,685,455.42/245,818.57
  6. Step 6: Final answer
    x = 190,985.11

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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.