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Finding the Fourth Proportional to 515,616.48, 773,461.98 and 215,795.39

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Solution

The fourth proportional to 515,616.48, 773,461.98 and 215,795.39 is: 323,708.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,616.48 : 773,461.98 = 215,795.39 : x
  2. Step 2: Convert to fraction form
    515,616.48/773,461.98 = 215,795.39/x
  3. Step 3: Cross multiply
    515,616.48x = 773,461.98 × 215,795.39
  4. Step 4: Simplify right side
    515,616.48x = 166,909,525,756.96
  5. Step 5: Solve for x
    x = 166,909,525,756.96/515,616.48
  6. Step 6: Final answer
    x = 323,708.67

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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.