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Finding the Fourth Proportional to 257,848.42, 386,772.75 and 80,369.74

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Solution

The fourth proportional to 257,848.42, 386,772.75 and 80,369.74 is: 120,554.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,848.42 : 386,772.75 = 80,369.74 : x
  2. Step 2: Convert to fraction form
    257,848.42/386,772.75 = 80,369.74/x
  3. Step 3: Cross multiply
    257,848.42x = 386,772.75 × 80,369.74
  4. Step 4: Simplify right side
    257,848.42x = 31,084,825,356.59
  5. Step 5: Solve for x
    x = 31,084,825,356.59/257,848.42
  6. Step 6: Final answer
    x = 120,554.65

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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.