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Finding the Fourth Proportional to 247,985.73, 342,220.65 and 134,808.48

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Solution

The fourth proportional to 247,985.73, 342,220.65 and 134,808.48 is: 186,035.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,985.73 : 342,220.65 = 134,808.48 : x
  2. Step 2: Convert to fraction form
    247,985.73/342,220.65 = 134,808.48/x
  3. Step 3: Cross multiply
    247,985.73x = 342,220.65 × 134,808.48
  4. Step 4: Simplify right side
    247,985.73x = 46,134,245,651.11
  5. Step 5: Solve for x
    x = 46,134,245,651.11/247,985.73
  6. Step 6: Final answer
    x = 186,035.89

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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.