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Finding the Fourth Proportional to 343,296.70, 515,090.85 and 165,712.30

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Solution

The fourth proportional to 343,296.70, 515,090.85 and 165,712.30 is: 248,638.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,296.70 : 515,090.85 = 165,712.30 : x
  2. Step 2: Convert to fraction form
    343,296.70/515,090.85 = 165,712.30/x
  3. Step 3: Cross multiply
    343,296.70x = 515,090.85 × 165,712.30
  4. Step 4: Simplify right side
    343,296.70x = 85,356,889,462.46
  5. Step 5: Solve for x
    x = 85,356,889,462.46/343,296.70
  6. Step 6: Final answer
    x = 248,638.83

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1.5x scale

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.