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Finding the Fourth Proportional to 390,795.52, 585,739.52 and 179,991.04

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Solution

The fourth proportional to 390,795.52, 585,739.52 and 179,991.04 is: 269,777.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,795.52 : 585,739.52 = 179,991.04 : x
  2. Step 2: Convert to fraction form
    390,795.52/585,739.52 = 179,991.04/x
  3. Step 3: Cross multiply
    390,795.52x = 585,739.52 × 179,991.04
  4. Step 4: Simplify right side
    390,795.52x = 105,427,865,373.90
  5. Step 5: Solve for x
    x = 105,427,865,373.90/390,795.52
  6. Step 6: Final answer
    x = 269,777.57

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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.