Home / 258,818.78-388,228.20-118,577.42

Finding the Fourth Proportional to 258,818.78, 388,228.20 and 118,577.42

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Solution

The fourth proportional to 258,818.78, 388,228.20 and 118,577.42 is: 177,866.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,818.78 : 388,228.20 = 118,577.42 : x
  2. Step 2: Convert to fraction form
    258,818.78/388,228.20 = 118,577.42/x
  3. Step 3: Cross multiply
    258,818.78x = 388,228.20 × 118,577.42
  4. Step 4: Simplify right side
    258,818.78x = 46,035,098,327.24
  5. Step 5: Solve for x
    x = 46,035,098,327.24/258,818.78
  6. Step 6: Final answer
    x = 177,866.14

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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.