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Finding the Fourth Proportional to 247,051, 371,072.40 and 147,405.64

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Solution

The fourth proportional to 247,051, 371,072.40 and 147,405.64 is: 221,404.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,051 : 371,072.40 = 147,405.64 : x
  2. Step 2: Convert to fraction form
    247,051/371,072.40 = 147,405.64/x
  3. Step 3: Cross multiply
    247,051x = 371,072.40 × 147,405.64
  4. Step 4: Simplify right side
    247,051x = 54,698,164,608.34
  5. Step 5: Solve for x
    x = 54,698,164,608.34/247,051
  6. Step 6: Final answer
    x = 221,404.34

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Why These Related Problems?

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