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Finding the Fourth Proportional to 259,746.40, 389,425.20 and 141,551.20

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Solution

The fourth proportional to 259,746.40, 389,425.20 and 141,551.20 is: 212,220.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,746.40 : 389,425.20 = 141,551.20 : x
  2. Step 2: Convert to fraction form
    259,746.40/389,425.20 = 141,551.20/x
  3. Step 3: Cross multiply
    259,746.40x = 389,425.20 × 141,551.20
  4. Step 4: Simplify right side
    259,746.40x = 55,123,604,370.24
  5. Step 5: Solve for x
    x = 55,123,604,370.24/259,746.40
  6. Step 6: Final answer
    x = 212,220.86

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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.