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Finding the Fourth Proportional to 515,602.09, 773,448.14 and 212,014.73

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Solution

The fourth proportional to 515,602.09, 773,448.14 and 212,014.73 is: 318,040.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,602.09 : 773,448.14 = 212,014.73 : x
  2. Step 2: Convert to fraction form
    515,602.09/773,448.14 = 212,014.73/x
  3. Step 3: Cross multiply
    515,602.09x = 773,448.14 × 212,014.73
  4. Step 4: Simplify right side
    515,602.09x = 163,982,401,034.76
  5. Step 5: Solve for x
    x = 163,982,401,034.76/515,602.09
  6. Step 6: Final answer
    x = 318,040.60

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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.