Home / 280,939.41-421,321.28-93,907.17

Finding the Fourth Proportional to 280,939.41, 421,321.28 and 93,907.17

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Solution

The fourth proportional to 280,939.41, 421,321.28 and 93,907.17 is: 140,831.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,939.41 : 421,321.28 = 93,907.17 : x
  2. Step 2: Convert to fraction form
    280,939.41/421,321.28 = 93,907.17/x
  3. Step 3: Cross multiply
    280,939.41x = 421,321.28 × 93,907.17
  4. Step 4: Simplify right side
    280,939.41x = 39,565,088,596.04
  5. Step 5: Solve for x
    x = 39,565,088,596.04/280,939.41
  6. Step 6: Final answer
    x = 140,831.39

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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.