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Finding the Fourth Proportional to 291,157.01, 400,864.37 and 284,804.38

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Solution

The fourth proportional to 291,157.01, 400,864.37 and 284,804.38 is: 392,118.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,157.01 : 400,864.37 = 284,804.38 : x
  2. Step 2: Convert to fraction form
    291,157.01/400,864.37 = 284,804.38/x
  3. Step 3: Cross multiply
    291,157.01x = 400,864.37 × 284,804.38
  4. Step 4: Simplify right side
    291,157.01x = 114,167,928,361.94
  5. Step 5: Solve for x
    x = 114,167,928,361.94/291,157.01
  6. Step 6: Final answer
    x = 392,118.08

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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.