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Finding the Fourth Proportional to 342,851.56, 514,359.45 and 143,060.81

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Solution

The fourth proportional to 342,851.56, 514,359.45 and 143,060.81 is: 214,625.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,851.56 : 514,359.45 = 143,060.81 : x
  2. Step 2: Convert to fraction form
    342,851.56/514,359.45 = 143,060.81/x
  3. Step 3: Cross multiply
    342,851.56x = 514,359.45 × 143,060.81
  4. Step 4: Simplify right side
    342,851.56x = 73,584,676,976.36
  5. Step 5: Solve for x
    x = 73,584,676,976.36/342,851.56
  6. Step 6: Final answer
    x = 214,625.47

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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.