Home / 205,138.90-307,708.35-202,374.10

Finding the Fourth Proportional to 205,138.90, 307,708.35 and 202,374.10

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Solution

The fourth proportional to 205,138.90, 307,708.35 and 202,374.10 is: 303,561.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,138.90 : 307,708.35 = 202,374.10 : x
  2. Step 2: Convert to fraction form
    205,138.90/307,708.35 = 202,374.10/x
  3. Step 3: Cross multiply
    205,138.90x = 307,708.35 × 202,374.10
  4. Step 4: Simplify right side
    205,138.90x = 62,272,200,393.74
  5. Step 5: Solve for x
    x = 62,272,200,393.74/205,138.90
  6. Step 6: Final answer
    x = 303,561.15

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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.