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Finding the Fourth Proportional to 515,408.99, 773,224.61 and 155,549.77

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Solution

The fourth proportional to 515,408.99, 773,224.61 and 155,549.77 is: 233,358.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,408.99 : 773,224.61 = 155,549.77 : x
  2. Step 2: Convert to fraction form
    515,408.99/773,224.61 = 155,549.77/x
  3. Step 3: Cross multiply
    515,408.99x = 773,224.61 × 155,549.77
  4. Step 4: Simplify right side
    515,408.99x = 120,274,907,533.03
  5. Step 5: Solve for x
    x = 120,274,907,533.03/515,408.99
  6. Step 6: Final answer
    x = 233,358.19

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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.