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Finding the Fourth Proportional to 319,850.34, 480,065.70 and 170,216.62

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Solution

The fourth proportional to 319,850.34, 480,065.70 and 170,216.62 is: 255,479.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,850.34 : 480,065.70 = 170,216.62 : x
  2. Step 2: Convert to fraction form
    319,850.34/480,065.70 = 170,216.62/x
  3. Step 3: Cross multiply
    319,850.34x = 480,065.70 × 170,216.62
  4. Step 4: Simplify right side
    319,850.34x = 81,715,160,831.93
  5. Step 5: Solve for x
    x = 81,715,160,831.93/319,850.34
  6. Step 6: Final answer
    x = 255,479.36

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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.