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Finding the Fourth Proportional to 231,721.40, 325,109.80 and 231,721.40

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Solution

The fourth proportional to 231,721.40, 325,109.80 and 231,721.40 is: 325,109.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,721.40 : 325,109.80 = 231,721.40 : x
  2. Step 2: Convert to fraction form
    231,721.40/325,109.80 = 231,721.40/x
  3. Step 3: Cross multiply
    231,721.40x = 325,109.80 × 231,721.40
  4. Step 4: Simplify right side
    231,721.40x = 75,334,898,009.72
  5. Step 5: Solve for x
    x = 75,334,898,009.72/231,721.40
  6. Step 6: Final answer
    x = 325,109.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.