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Finding the Fourth Proportional to 343,310.40, 515,427.30 and 201,301.20

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Solution

The fourth proportional to 343,310.40, 515,427.30 and 201,301.20 is: 302,222.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,310.40 : 515,427.30 = 201,301.20 : x
  2. Step 2: Convert to fraction form
    343,310.40/515,427.30 = 201,301.20/x
  3. Step 3: Cross multiply
    343,310.40x = 515,427.30 × 201,301.20
  4. Step 4: Simplify right side
    343,310.40x = 103,756,134,002.76
  5. Step 5: Solve for x
    x = 103,756,134,002.76/343,310.40
  6. Step 6: Final answer
    x = 302,222.52

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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.