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Finding the Fourth Proportional to 343,209.22, 514,816.87 and 140,916.58

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Solution

The fourth proportional to 343,209.22, 514,816.87 and 140,916.58 is: 211,376.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,209.22 : 514,816.87 = 140,916.58 : x
  2. Step 2: Convert to fraction form
    343,209.22/514,816.87 = 140,916.58/x
  3. Step 3: Cross multiply
    343,209.22x = 514,816.87 × 140,916.58
  4. Step 4: Simplify right side
    343,209.22x = 72,546,232,646.70
  5. Step 5: Solve for x
    x = 72,546,232,646.70/343,209.22
  6. Step 6: Final answer
    x = 211,376.12

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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.