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Finding the Fourth Proportional to 515,208.56, 710,522.39 and 321,634.15

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Solution

The fourth proportional to 515,208.56, 710,522.39 and 321,634.15 is: 443,564.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,208.56 : 710,522.39 = 321,634.15 : x
  2. Step 2: Convert to fraction form
    515,208.56/710,522.39 = 321,634.15/x
  3. Step 3: Cross multiply
    515,208.56x = 710,522.39 × 321,634.15
  4. Step 4: Simplify right side
    515,208.56x = 228,528,263,991.40
  5. Step 5: Solve for x
    x = 228,528,263,991.40/515,208.56
  6. Step 6: Final answer
    x = 443,564.58

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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.