Home / 386,632.60-579,948.90-133,912.60

Finding the Fourth Proportional to 386,632.60, 579,948.90 and 133,912.60

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Solution

The fourth proportional to 386,632.60, 579,948.90 and 133,912.60 is: 200,868.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,632.60 : 579,948.90 = 133,912.60 : x
  2. Step 2: Convert to fraction form
    386,632.60/579,948.90 = 133,912.60/x
  3. Step 3: Cross multiply
    386,632.60x = 579,948.90 × 133,912.60
  4. Step 4: Simplify right side
    386,632.60x = 77,662,465,066.14
  5. Step 5: Solve for x
    x = 77,662,465,066.14/386,632.60
  6. Step 6: Final answer
    x = 200,868.90

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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.