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Finding the Fourth Proportional to 469,840.08, 648,379.74 and 254,980.20

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Solution

The fourth proportional to 469,840.08, 648,379.74 and 254,980.20 is: 351,872.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,840.08 : 648,379.74 = 254,980.20 : x
  2. Step 2: Convert to fraction form
    469,840.08/648,379.74 = 254,980.20/x
  3. Step 3: Cross multiply
    469,840.08x = 648,379.74 × 254,980.20
  4. Step 4: Simplify right side
    469,840.08x = 165,323,995,781.15
  5. Step 5: Solve for x
    x = 165,323,995,781.15/469,840.08
  6. Step 6: Final answer
    x = 351,872.91

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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.