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Finding the Fourth Proportional to 429,617.70, 644,183.55 and 163,386.90

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Solution

The fourth proportional to 429,617.70, 644,183.55 and 163,386.90 is: 244,987.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,617.70 : 644,183.55 = 163,386.90 : x
  2. Step 2: Convert to fraction form
    429,617.70/644,183.55 = 163,386.90/x
  3. Step 3: Cross multiply
    429,617.70x = 644,183.55 × 163,386.90
  4. Step 4: Simplify right side
    429,617.70x = 105,251,153,265.50
  5. Step 5: Solve for x
    x = 105,251,153,265.50/429,617.70
  6. Step 6: Final answer
    x = 244,987.94

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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.