Home / 245,585.20-338,904.35-138,155.20

Finding the Fourth Proportional to 245,585.20, 338,904.35 and 138,155.20

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Solution

The fourth proportional to 245,585.20, 338,904.35 and 138,155.20 is: 190,652.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,585.20 : 338,904.35 = 138,155.20 : x
  2. Step 2: Convert to fraction form
    245,585.20/338,904.35 = 138,155.20/x
  3. Step 3: Cross multiply
    245,585.20x = 338,904.35 × 138,155.20
  4. Step 4: Simplify right side
    245,585.20x = 46,821,397,564.34
  5. Step 5: Solve for x
    x = 46,821,397,564.34/245,585.20
  6. Step 6: Final answer
    x = 190,652.36

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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.