Home / 386,289.76-579,438.96-254,002.72

Finding the Fourth Proportional to 386,289.76, 579,438.96 and 254,002.72

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Solution

The fourth proportional to 386,289.76, 579,438.96 and 254,002.72 is: 381,006.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,289.76 : 579,438.96 = 254,002.72 : x
  2. Step 2: Convert to fraction form
    386,289.76/579,438.96 = 254,002.72/x
  3. Step 3: Cross multiply
    386,289.76x = 579,438.96 × 254,002.72
  4. Step 4: Simplify right side
    386,289.76x = 147,179,071,913.97
  5. Step 5: Solve for x
    x = 147,179,071,913.97/386,289.76
  6. Step 6: Final answer
    x = 381,006.92

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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.