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Finding the Fourth Proportional to 343,688.80, 515,095.80 and 165,812.80

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Solution

The fourth proportional to 343,688.80, 515,095.80 and 165,812.80 is: 248,508.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,688.80 : 515,095.80 = 165,812.80 : x
  2. Step 2: Convert to fraction form
    343,688.80/515,095.80 = 165,812.80/x
  3. Step 3: Cross multiply
    343,688.80x = 515,095.80 × 165,812.80
  4. Step 4: Simplify right side
    343,688.80x = 85,409,476,866.24
  5. Step 5: Solve for x
    x = 85,409,476,866.24/343,688.80
  6. Step 6: Final answer
    x = 248,508.18

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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.