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Finding the Fourth Proportional to 343,901.10, 515,851.65 and 320,573.10

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Solution

The fourth proportional to 343,901.10, 515,851.65 and 320,573.10 is: 480,859.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,901.10 : 515,851.65 = 320,573.10 : x
  2. Step 2: Convert to fraction form
    343,901.10/515,851.65 = 320,573.10/x
  3. Step 3: Cross multiply
    343,901.10x = 515,851.65 × 320,573.10
  4. Step 4: Simplify right side
    343,901.10x = 165,368,162,580.62
  5. Step 5: Solve for x
    x = 165,368,162,580.62/343,901.10
  6. Step 6: Final answer
    x = 480,859.65

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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.