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Finding the Fourth Proportional to 401,963.68, 554,596.32 and 258,806.56

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Solution

The fourth proportional to 401,963.68, 554,596.32 and 258,806.56 is: 357,079.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,963.68 : 554,596.32 = 258,806.56 : x
  2. Step 2: Convert to fraction form
    401,963.68/554,596.32 = 258,806.56/x
  3. Step 3: Cross multiply
    401,963.68x = 554,596.32 × 258,806.56
  4. Step 4: Simplify right side
    401,963.68x = 143,533,165,767.86
  5. Step 5: Solve for x
    x = 143,533,165,767.86/401,963.68
  6. Step 6: Final answer
    x = 357,079.94

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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.