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Finding the Fourth Proportional to 319,989.35, 480,017.76 and 106,682.91

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Solution

The fourth proportional to 319,989.35, 480,017.76 and 106,682.91 is: 160,035.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,989.35 : 480,017.76 = 106,682.91 : x
  2. Step 2: Convert to fraction form
    319,989.35/480,017.76 = 106,682.91/x
  3. Step 3: Cross multiply
    319,989.35x = 480,017.76 × 106,682.91
  4. Step 4: Simplify right side
    319,989.35x = 51,209,690,188.39
  5. Step 5: Solve for x
    x = 51,209,690,188.39/319,989.35
  6. Step 6: Final answer
    x = 160,035.61

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1.5x scale

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.