Home / 245,369.08-338,621.34-137,972.80

Finding the Fourth Proportional to 245,369.08, 338,621.34 and 137,972.80

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Solution

The fourth proportional to 245,369.08, 338,621.34 and 137,972.80 is: 190,409.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,369.08 : 338,621.34 = 137,972.80 : x
  2. Step 2: Convert to fraction form
    245,369.08/338,621.34 = 137,972.80/x
  3. Step 3: Cross multiply
    245,369.08x = 338,621.34 × 137,972.80
  4. Step 4: Simplify right side
    245,369.08x = 46,720,534,419.55
  5. Step 5: Solve for x
    x = 46,720,534,419.55/245,369.08
  6. Step 6: Final answer
    x = 190,409.22

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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.