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Finding the Fourth Proportional to 478,768.74, 660,700.67 and 263,912.40

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Solution

The fourth proportional to 478,768.74, 660,700.67 and 263,912.40 is: 364,199.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,768.74 : 660,700.67 = 263,912.40 : x
  2. Step 2: Convert to fraction form
    478,768.74/660,700.67 = 263,912.40/x
  3. Step 3: Cross multiply
    478,768.74x = 660,700.67 × 263,912.40
  4. Step 4: Simplify right side
    478,768.74x = 174,367,098,181.75
  5. Step 5: Solve for x
    x = 174,367,098,181.75/478,768.74
  6. Step 6: Final answer
    x = 364,199.00

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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.