Home / 231,129.45-318,783.06-198,917.64

Finding the Fourth Proportional to 231,129.45, 318,783.06 and 198,917.64

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Solution

The fourth proportional to 231,129.45, 318,783.06 and 198,917.64 is: 274,355.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,129.45 : 318,783.06 = 198,917.64 : x
  2. Step 2: Convert to fraction form
    231,129.45/318,783.06 = 198,917.64/x
  3. Step 3: Cross multiply
    231,129.45x = 318,783.06 × 198,917.64
  4. Step 4: Simplify right side
    231,129.45x = 63,411,573,967.18
  5. Step 5: Solve for x
    x = 63,411,573,967.18/231,129.45
  6. Step 6: Final answer
    x = 274,355.23

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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.