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Finding the Fourth Proportional to 343,347.60, 515,021.40 and 329,350.80

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Solution

The fourth proportional to 343,347.60, 515,021.40 and 329,350.80 is: 494,026.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,347.60 : 515,021.40 = 329,350.80 : x
  2. Step 2: Convert to fraction form
    343,347.60/515,021.40 = 329,350.80/x
  3. Step 3: Cross multiply
    343,347.60x = 515,021.40 × 329,350.80
  4. Step 4: Simplify right side
    343,347.60x = 169,622,710,107.12
  5. Step 5: Solve for x
    x = 169,622,710,107.12/343,347.60
  6. Step 6: Final answer
    x = 494,026.20

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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.