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Finding the Fourth Proportional to 478,775.98, 660,680.85 and 263,917.90

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Solution

The fourth proportional to 478,775.98, 660,680.85 and 263,917.90 is: 364,190.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,775.98 : 660,680.85 = 263,917.90 : x
  2. Step 2: Convert to fraction form
    478,775.98/660,680.85 = 263,917.90/x
  3. Step 3: Cross multiply
    478,775.98x = 660,680.85 × 263,917.90
  4. Step 4: Simplify right side
    478,775.98x = 174,365,502,502.22
  5. Step 5: Solve for x
    x = 174,365,502,502.22/478,775.98
  6. Step 6: Final answer
    x = 364,190.16

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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.