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Finding the Fourth Proportional to 245,486.37, 338,784.59 and 138,062.75

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Solution

The fourth proportional to 245,486.37, 338,784.59 and 138,062.75 is: 190,534.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,486.37 : 338,784.59 = 138,062.75 : x
  2. Step 2: Convert to fraction form
    245,486.37/338,784.59 = 138,062.75/x
  3. Step 3: Cross multiply
    245,486.37x = 338,784.59 × 138,062.75
  4. Step 4: Simplify right side
    245,486.37x = 46,773,531,384.38
  5. Step 5: Solve for x
    x = 46,773,531,384.38/245,486.37
  6. Step 6: Final answer
    x = 190,534.13

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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.