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Finding the Fourth Proportional to 343,143.81, 514,784.51 and 118,512.48

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Solution

The fourth proportional to 343,143.81, 514,784.51 and 118,512.48 is: 177,792.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,143.81 : 514,784.51 = 118,512.48 : x
  2. Step 2: Convert to fraction form
    343,143.81/514,784.51 = 118,512.48/x
  3. Step 3: Cross multiply
    343,143.81x = 514,784.51 × 118,512.48
  4. Step 4: Simplify right side
    343,143.81x = 61,008,388,353.12
  5. Step 5: Solve for x
    x = 61,008,388,353.12/343,143.81
  6. Step 6: Final answer
    x = 177,792.48

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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.