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Finding the Fourth Proportional to 253,665.60, 350,054.32 and 138,943.17

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Solution

The fourth proportional to 253,665.60, 350,054.32 and 138,943.17 is: 191,739.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,665.60 : 350,054.32 = 138,943.17 : x
  2. Step 2: Convert to fraction form
    253,665.60/350,054.32 = 138,943.17/x
  3. Step 3: Cross multiply
    253,665.60x = 350,054.32 × 138,943.17
  4. Step 4: Simplify right side
    253,665.60x = 48,637,656,892.99
  5. Step 5: Solve for x
    x = 48,637,656,892.99/253,665.60
  6. Step 6: Final answer
    x = 191,739.27

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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.