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Finding the Fourth Proportional to 401,437.62, 554,008.41 and 231,682.68

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Solution

The fourth proportional to 401,437.62, 554,008.41 and 231,682.68 is: 319,736.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,437.62 : 554,008.41 = 231,682.68 : x
  2. Step 2: Convert to fraction form
    401,437.62/554,008.41 = 231,682.68/x
  3. Step 3: Cross multiply
    401,437.62x = 554,008.41 × 231,682.68
  4. Step 4: Simplify right side
    401,437.62x = 128,354,153,171.34
  5. Step 5: Solve for x
    x = 128,354,153,171.34/401,437.62
  6. Step 6: Final answer
    x = 319,736.23

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1.5x scale

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.