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Finding the Fourth Proportional to 279,238.48, 418,608.54 and 101,621.32

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Solution

The fourth proportional to 279,238.48, 418,608.54 and 101,621.32 is: 152,341.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,238.48 : 418,608.54 = 101,621.32 : x
  2. Step 2: Convert to fraction form
    279,238.48/418,608.54 = 101,621.32/x
  3. Step 3: Cross multiply
    279,238.48x = 418,608.54 × 101,621.32
  4. Step 4: Simplify right side
    279,238.48x = 42,539,552,398.07
  5. Step 5: Solve for x
    x = 42,539,552,398.07/279,238.48
  6. Step 6: Final answer
    x = 152,341.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.