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Finding the Fourth Proportional to 245,554, 338,881.64 and 138,134.32

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Solution

The fourth proportional to 245,554, 338,881.64 and 138,134.32 is: 190,634.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,554 : 338,881.64 = 138,134.32 : x
  2. Step 2: Convert to fraction form
    245,554/338,881.64 = 138,134.32/x
  3. Step 3: Cross multiply
    245,554x = 338,881.64 × 138,134.32
  4. Step 4: Simplify right side
    245,554x = 46,811,184,901.88
  5. Step 5: Solve for x
    x = 46,811,184,901.88/245,554
  6. Step 6: Final answer
    x = 190,634.99

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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.