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Finding the Fourth Proportional to 343,669.35, 515,504.03 and 338,420.55

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Solution

The fourth proportional to 343,669.35, 515,504.03 and 338,420.55 is: 507,630.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,669.35 : 515,504.03 = 338,420.55 : x
  2. Step 2: Convert to fraction form
    343,669.35/515,504.03 = 338,420.55/x
  3. Step 3: Cross multiply
    343,669.35x = 515,504.03 × 338,420.55
  4. Step 4: Simplify right side
    343,669.35x = 174,457,155,667.71
  5. Step 5: Solve for x
    x = 174,457,155,667.71/343,669.35
  6. Step 6: Final answer
    x = 507,630.83

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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.