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Finding the Fourth Proportional to 519,767, 717,278.86 and 281,303

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Solution

The fourth proportional to 519,767, 717,278.86 and 281,303 is: 388,198.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,767 : 717,278.86 = 281,303 : x
  2. Step 2: Convert to fraction form
    519,767/717,278.86 = 281,303/x
  3. Step 3: Cross multiply
    519,767x = 717,278.86 × 281,303
  4. Step 4: Simplify right side
    519,767x = 201,772,695,154.58
  5. Step 5: Solve for x
    x = 201,772,695,154.58/519,767
  6. Step 6: Final answer
    x = 388,198.36

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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.