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Finding the Fourth Proportional to 316,043.37, 436,153.41 and 172,794.87

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Solution

The fourth proportional to 316,043.37, 436,153.41 and 172,794.87 is: 238,464.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,043.37 : 436,153.41 = 172,794.87 : x
  2. Step 2: Convert to fraction form
    316,043.37/436,153.41 = 172,794.87/x
  3. Step 3: Cross multiply
    316,043.37x = 436,153.41 × 172,794.87
  4. Step 4: Simplify right side
    316,043.37x = 75,365,071,781.01
  5. Step 5: Solve for x
    x = 75,365,071,781.01/316,043.37
  6. Step 6: Final answer
    x = 238,464.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.