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Finding the Fourth Proportional to 247,978.47, 371,672.43 and 172,690.98

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Solution

The fourth proportional to 247,978.47, 371,672.43 and 172,690.98 is: 258,830.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,978.47 : 371,672.43 = 172,690.98 : x
  2. Step 2: Convert to fraction form
    247,978.47/371,672.43 = 172,690.98/x
  3. Step 3: Cross multiply
    247,978.47x = 371,672.43 × 172,690.98
  4. Step 4: Simplify right side
    247,978.47x = 64,184,476,175.68
  5. Step 5: Solve for x
    x = 64,184,476,175.68/247,978.47
  6. Step 6: Final answer
    x = 258,830.84

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.