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Finding the Fourth Proportional to 478,760.36, 660,693.74 and 263,908.10

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Solution

The fourth proportional to 478,760.36, 660,693.74 and 263,908.10 is: 364,195.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,760.36 : 660,693.74 = 263,908.10 : x
  2. Step 2: Convert to fraction form
    478,760.36/660,693.74 = 263,908.10/x
  3. Step 3: Cross multiply
    478,760.36x = 660,693.74 × 263,908.10
  4. Step 4: Simplify right side
    478,760.36x = 174,362,429,937.49
  5. Step 5: Solve for x
    x = 174,362,429,937.49/478,760.36
  6. Step 6: Final answer
    x = 364,195.63

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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.