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Finding the Fourth Proportional to 343,355.60, 515,252.10 and 201,200.60

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Solution

The fourth proportional to 343,355.60, 515,252.10 and 201,200.60 is: 301,929.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,355.60 : 515,252.10 = 201,200.60 : x
  2. Step 2: Convert to fraction form
    343,355.60/515,252.10 = 201,200.60/x
  3. Step 3: Cross multiply
    343,355.60x = 515,252.10 × 201,200.60
  4. Step 4: Simplify right side
    343,355.60x = 103,669,031,671.26
  5. Step 5: Solve for x
    x = 103,669,031,671.26/343,355.60
  6. Step 6: Final answer
    x = 301,929.05

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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.