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Finding the Fourth Proportional to 398,941.98, 550,464.75 and 237,812.01

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Solution

The fourth proportional to 398,941.98, 550,464.75 and 237,812.01 is: 328,135.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,941.98 : 550,464.75 = 237,812.01 : x
  2. Step 2: Convert to fraction form
    398,941.98/550,464.75 = 237,812.01/x
  3. Step 3: Cross multiply
    398,941.98x = 550,464.75 × 237,812.01
  4. Step 4: Simplify right side
    398,941.98x = 130,907,128,631.65
  5. Step 5: Solve for x
    x = 130,907,128,631.65/398,941.98
  6. Step 6: Final answer
    x = 328,135.76

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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.