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Finding the Fourth Proportional to 247,878.66, 342,072.90 and 140,455.98

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Solution

The fourth proportional to 247,878.66, 342,072.90 and 140,455.98 is: 193,829.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,878.66 : 342,072.90 = 140,455.98 : x
  2. Step 2: Convert to fraction form
    247,878.66/342,072.90 = 140,455.98/x
  3. Step 3: Cross multiply
    247,878.66x = 342,072.90 × 140,455.98
  4. Step 4: Simplify right side
    247,878.66x = 48,046,184,400.94
  5. Step 5: Solve for x
    x = 48,046,184,400.94/247,878.66
  6. Step 6: Final answer
    x = 193,829.45

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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.