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Finding the Fourth Proportional to 500,628.78, 750,989.28 and 163,671.21

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Solution

The fourth proportional to 500,628.78, 750,989.28 and 163,671.21 is: 245,521.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,628.78 : 750,989.28 = 163,671.21 : x
  2. Step 2: Convert to fraction form
    500,628.78/750,989.28 = 163,671.21/x
  3. Step 3: Cross multiply
    500,628.78x = 750,989.28 × 163,671.21
  4. Step 4: Simplify right side
    500,628.78x = 122,915,324,154.63
  5. Step 5: Solve for x
    x = 122,915,324,154.63/500,628.78
  6. Step 6: Final answer
    x = 245,521.89

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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.