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Finding the Fourth Proportional to 301,387.48, 451,908.42 and 90,963.16

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Solution

The fourth proportional to 301,387.48, 451,908.42 and 90,963.16 is: 136,392.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,387.48 : 451,908.42 = 90,963.16 : x
  2. Step 2: Convert to fraction form
    301,387.48/451,908.42 = 90,963.16/x
  3. Step 3: Cross multiply
    301,387.48x = 451,908.42 × 90,963.16
  4. Step 4: Simplify right side
    301,387.48x = 41,107,017,913.81
  5. Step 5: Solve for x
    x = 41,107,017,913.81/301,387.48
  6. Step 6: Final answer
    x = 136,392.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.