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Finding the Fourth Proportional to 478,958.90, 660,967.89 and 264,106.58

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Solution

The fourth proportional to 478,958.90, 660,967.89 and 264,106.58 is: 364,469.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,958.90 : 660,967.89 = 264,106.58 : x
  2. Step 2: Convert to fraction form
    478,958.90/660,967.89 = 264,106.58/x
  3. Step 3: Cross multiply
    478,958.90x = 660,967.89 × 264,106.58
  4. Step 4: Simplify right side
    478,958.90x = 174,565,968,917.72
  5. Step 5: Solve for x
    x = 174,565,968,917.72/478,958.90
  6. Step 6: Final answer
    x = 364,469.62

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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.