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Finding the Fourth Proportional to 401,785.75, 554,473.49 and 220,509.27

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Solution

The fourth proportional to 401,785.75, 554,473.49 and 220,509.27 is: 304,307.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,785.75 : 554,473.49 = 220,509.27 : x
  2. Step 2: Convert to fraction form
    401,785.75/554,473.49 = 220,509.27/x
  3. Step 3: Cross multiply
    401,785.75x = 554,473.49 × 220,509.27
  4. Step 4: Simplify right side
    401,785.75x = 122,266,543,411.71
  5. Step 5: Solve for x
    x = 122,266,543,411.71/401,785.75
  6. Step 6: Final answer
    x = 304,307.81

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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.