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Finding the Fourth Proportional to 173,212.80, 259,905.60 and 98,390.40

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Solution

The fourth proportional to 173,212.80, 259,905.60 and 98,390.40 is: 147,634.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,212.80 : 259,905.60 = 98,390.40 : x
  2. Step 2: Convert to fraction form
    173,212.80/259,905.60 = 98,390.40/x
  3. Step 3: Cross multiply
    173,212.80x = 259,905.60 × 98,390.40
  4. Step 4: Simplify right side
    173,212.80x = 25,572,215,946.24
  5. Step 5: Solve for x
    x = 25,572,215,946.24/173,212.80
  6. Step 6: Final answer
    x = 147,634.68

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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.