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Finding the Fourth Proportional to 478,975.44, 660,990.60 and 264,123.21

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Solution

The fourth proportional to 478,975.44, 660,990.60 and 264,123.21 is: 364,492.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,975.44 : 660,990.60 = 264,123.21 : x
  2. Step 2: Convert to fraction form
    478,975.44/660,990.60 = 264,123.21/x
  3. Step 3: Cross multiply
    478,975.44x = 660,990.60 × 264,123.21
  4. Step 4: Simplify right side
    478,975.44x = 174,582,959,051.83
  5. Step 5: Solve for x
    x = 174,582,959,051.83/478,975.44
  6. Step 6: Final answer
    x = 364,492.51

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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.