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Finding the Fourth Proportional to 519,748, 717,252.30 and 281,284

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Solution

The fourth proportional to 519,748, 717,252.30 and 281,284 is: 388,171.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,748 : 717,252.30 = 281,284 : x
  2. Step 2: Convert to fraction form
    519,748/717,252.30 = 281,284/x
  3. Step 3: Cross multiply
    519,748x = 717,252.30 × 281,284
  4. Step 4: Simplify right side
    519,748x = 201,751,595,953.20
  5. Step 5: Solve for x
    x = 201,751,595,953.20/519,748
  6. Step 6: Final answer
    x = 388,171.95

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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.