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Finding the Fourth Proportional to 469,917.86, 648,487.22 and 255,057.86

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Solution

The fourth proportional to 469,917.86, 648,487.22 and 255,057.86 is: 351,980.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,917.86 : 648,487.22 = 255,057.86 : x
  2. Step 2: Convert to fraction form
    469,917.86/648,487.22 = 255,057.86/x
  3. Step 3: Cross multiply
    469,917.86x = 648,487.22 × 255,057.86
  4. Step 4: Simplify right side
    469,917.86x = 165,401,762,916.48
  5. Step 5: Solve for x
    x = 165,401,762,916.48/469,917.86
  6. Step 6: Final answer
    x = 351,980.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.