Home / 385,850.25-578,815.47-105,367.50

Finding the Fourth Proportional to 385,850.25, 578,815.47 and 105,367.50

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Solution

The fourth proportional to 385,850.25, 578,815.47 and 105,367.50 is: 158,062.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,850.25 : 578,815.47 = 105,367.50 : x
  2. Step 2: Convert to fraction form
    385,850.25/578,815.47 = 105,367.50/x
  3. Step 3: Cross multiply
    385,850.25x = 578,815.47 × 105,367.50
  4. Step 4: Simplify right side
    385,850.25x = 60,988,339,035.23
  5. Step 5: Solve for x
    x = 60,988,339,035.23/385,850.25
  6. Step 6: Final answer
    x = 158,062.20

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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.