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Finding the Fourth Proportional to 245,519.47, 338,813.53 and 138,089.46

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Solution

The fourth proportional to 245,519.47, 338,813.53 and 138,089.46 is: 190,561.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,519.47 : 338,813.53 = 138,089.46 : x
  2. Step 2: Convert to fraction form
    245,519.47/338,813.53 = 138,089.46/x
  3. Step 3: Cross multiply
    245,519.47x = 338,813.53 × 138,089.46
  4. Step 4: Simplify right side
    245,519.47x = 46,786,576,707.95
  5. Step 5: Solve for x
    x = 46,786,576,707.95/245,519.47
  6. Step 6: Final answer
    x = 190,561.57

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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.