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Finding the Fourth Proportional to 245,203.65, 338,391 and 137,773.35

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Solution

The fourth proportional to 245,203.65, 338,391 and 137,773.35 is: 190,132.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,203.65 : 338,391 = 137,773.35 : x
  2. Step 2: Convert to fraction form
    245,203.65/338,391 = 137,773.35/x
  3. Step 3: Cross multiply
    245,203.65x = 338,391 × 137,773.35
  4. Step 4: Simplify right side
    245,203.65x = 46,621,261,679.85
  5. Step 5: Solve for x
    x = 46,621,261,679.85/245,203.65
  6. Step 6: Final answer
    x = 190,132.82

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1.5x scale

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.