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Finding the Fourth Proportional to 231,720.40, 325,108.40 and 231,720.40

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Solution

The fourth proportional to 231,720.40, 325,108.40 and 231,720.40 is: 325,108.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,720.40 : 325,108.40 = 231,720.40 : x
  2. Step 2: Convert to fraction form
    231,720.40/325,108.40 = 231,720.40/x
  3. Step 3: Cross multiply
    231,720.40x = 325,108.40 × 231,720.40
  4. Step 4: Simplify right side
    231,720.40x = 75,334,248,491.36
  5. Step 5: Solve for x
    x = 75,334,248,491.36/231,720.40
  6. Step 6: Final answer
    x = 325,108.40

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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.