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Finding the Fourth Proportional to 515,647.98, 773,492.90 and 245,637.27

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Solution

The fourth proportional to 515,647.98, 773,492.90 and 245,637.27 is: 368,465.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,647.98 : 773,492.90 = 245,637.27 : x
  2. Step 2: Convert to fraction form
    515,647.98/773,492.90 = 245,637.27/x
  3. Step 3: Cross multiply
    515,647.98x = 773,492.90 × 245,637.27
  4. Step 4: Simplify right side
    515,647.98x = 189,998,683,092.20
  5. Step 5: Solve for x
    x = 189,998,683,092.20/515,647.98
  6. Step 6: Final answer
    x = 368,465.87

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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.