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Finding the Fourth Proportional to 515,182.68, 710,976.24 and 321,704.88

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Solution

The fourth proportional to 515,182.68, 710,976.24 and 321,704.88 is: 443,967.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,182.68 : 710,976.24 = 321,704.88 : x
  2. Step 2: Convert to fraction form
    515,182.68/710,976.24 = 321,704.88/x
  3. Step 3: Cross multiply
    515,182.68x = 710,976.24 × 321,704.88
  4. Step 4: Simplify right side
    515,182.68x = 228,724,525,972.05
  5. Step 5: Solve for x
    x = 228,724,525,972.05/515,182.68
  6. Step 6: Final answer
    x = 443,967.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.