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Finding the Fourth Proportional to 245,151.80, 338,307.44 and 137,719.53

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Solution

The fourth proportional to 245,151.80, 338,307.44 and 137,719.53 is: 190,051.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,151.80 : 338,307.44 = 137,719.53 : x
  2. Step 2: Convert to fraction form
    245,151.80/338,307.44 = 137,719.53/x
  3. Step 3: Cross multiply
    245,151.80x = 338,307.44 × 137,719.53
  4. Step 4: Simplify right side
    245,151.80x = 46,591,541,632.30
  5. Step 5: Solve for x
    x = 46,591,541,632.30/245,151.80
  6. Step 6: Final answer
    x = 190,051.80

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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.