Home / 386,128.18-579,186.07-119,888.96

Finding the Fourth Proportional to 386,128.18, 579,186.07 and 119,888.96

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Solution

The fourth proportional to 386,128.18, 579,186.07 and 119,888.96 is: 179,831.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,128.18 : 579,186.07 = 119,888.96 : x
  2. Step 2: Convert to fraction form
    386,128.18/579,186.07 = 119,888.96/x
  3. Step 3: Cross multiply
    386,128.18x = 579,186.07 × 119,888.96
  4. Step 4: Simplify right side
    386,128.18x = 69,438,015,578.79
  5. Step 5: Solve for x
    x = 69,438,015,578.79/386,128.18
  6. Step 6: Final answer
    x = 179,831.51

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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.