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Finding the Fourth Proportional to 625,102.68, 862,639.81 and 353,170.47

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Solution

The fourth proportional to 625,102.68, 862,639.81 and 353,170.47 is: 487,374.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,102.68 : 862,639.81 = 353,170.47 : x
  2. Step 2: Convert to fraction form
    625,102.68/862,639.81 = 353,170.47/x
  3. Step 3: Cross multiply
    625,102.68x = 862,639.81 × 353,170.47
  4. Step 4: Simplify right side
    625,102.68x = 304,658,907,138.41
  5. Step 5: Solve for x
    x = 304,658,907,138.41/625,102.68
  6. Step 6: Final answer
    x = 487,374.18

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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.