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Finding the Fourth Proportional to 315,086.99, 472,840.63 and 163,423.85

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Solution

The fourth proportional to 315,086.99, 472,840.63 and 163,423.85 is: 245,244.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,086.99 : 472,840.63 = 163,423.85 : x
  2. Step 2: Convert to fraction form
    315,086.99/472,840.63 = 163,423.85/x
  3. Step 3: Cross multiply
    315,086.99x = 472,840.63 × 163,423.85
  4. Step 4: Simplify right side
    315,086.99x = 77,273,433,418.26
  5. Step 5: Solve for x
    x = 77,273,433,418.26/315,086.99
  6. Step 6: Final answer
    x = 245,244.76

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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.