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Finding the Fourth Proportional to 478,991.98, 660,993.78 and 264,141.10

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Solution

The fourth proportional to 478,991.98, 660,993.78 and 264,141.10 is: 364,506.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,991.98 : 660,993.78 = 264,141.10 : x
  2. Step 2: Convert to fraction form
    478,991.98/660,993.78 = 264,141.10/x
  3. Step 3: Cross multiply
    478,991.98x = 660,993.78 × 264,141.10
  4. Step 4: Simplify right side
    478,991.98x = 174,595,624,142.36
  5. Step 5: Solve for x
    x = 174,595,624,142.36/478,991.98
  6. Step 6: Final answer
    x = 364,506.36

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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.