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Finding the Fourth Proportional to 401,611.26, 554,598.59 and 258,622.77

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Solution

The fourth proportional to 401,611.26, 554,598.59 and 258,622.77 is: 357,140.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,611.26 : 554,598.59 = 258,622.77 : x
  2. Step 2: Convert to fraction form
    401,611.26/554,598.59 = 258,622.77/x
  3. Step 3: Cross multiply
    401,611.26x = 554,598.59 × 258,622.77
  4. Step 4: Simplify right side
    401,611.26x = 143,431,823,583.89
  5. Step 5: Solve for x
    x = 143,431,823,583.89/401,611.26
  6. Step 6: Final answer
    x = 357,140.94

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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.