Home / 386,380.17-579,563.78-105,897.42

Finding the Fourth Proportional to 386,380.17, 579,563.78 and 105,897.42

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Solution

The fourth proportional to 386,380.17, 579,563.78 and 105,897.42 is: 158,844.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,380.17 : 579,563.78 = 105,897.42 : x
  2. Step 2: Convert to fraction form
    386,380.17/579,563.78 = 105,897.42/x
  3. Step 3: Cross multiply
    386,380.17x = 579,563.78 × 105,897.42
  4. Step 4: Simplify right side
    386,380.17x = 61,374,308,497.96
  5. Step 5: Solve for x
    x = 61,374,308,497.96/386,380.17
  6. Step 6: Final answer
    x = 158,844.35

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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.