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Finding the Fourth Proportional to 401,526.62, 554,230.81 and 258,286.66

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Solution

The fourth proportional to 401,526.62, 554,230.81 and 258,286.66 is: 356,515.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,526.62 : 554,230.81 = 258,286.66 : x
  2. Step 2: Convert to fraction form
    401,526.62/554,230.81 = 258,286.66/x
  3. Step 3: Cross multiply
    401,526.62x = 554,230.81 × 258,286.66
  4. Step 4: Simplify right side
    401,526.62x = 143,150,427,565.26
  5. Step 5: Solve for x
    x = 143,150,427,565.26/401,526.62
  6. Step 6: Final answer
    x = 356,515.41

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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.