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Finding the Fourth Proportional to 343,389.74, 515,014.46 and 130,084.11

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Solution

The fourth proportional to 343,389.74, 515,014.46 and 130,084.11 is: 195,099.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,389.74 : 515,014.46 = 130,084.11 : x
  2. Step 2: Convert to fraction form
    343,389.74/515,014.46 = 130,084.11/x
  3. Step 3: Cross multiply
    343,389.74x = 515,014.46 × 130,084.11
  4. Step 4: Simplify right side
    343,389.74x = 66,995,197,015.81
  5. Step 5: Solve for x
    x = 66,995,197,015.81/343,389.74
  6. Step 6: Final answer
    x = 195,099.59

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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.