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Finding the Fourth Proportional to 548,999.64, 822,928.32 and 212,271.48

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Solution

The fourth proportional to 548,999.64, 822,928.32 and 212,271.48 is: 318,186.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,999.64 : 822,928.32 = 212,271.48 : x
  2. Step 2: Convert to fraction form
    548,999.64/822,928.32 = 212,271.48/x
  3. Step 3: Cross multiply
    548,999.64x = 822,928.32 × 212,271.48
  4. Step 4: Simplify right side
    548,999.64x = 174,684,212,420.31
  5. Step 5: Solve for x
    x = 174,684,212,420.31/548,999.64
  6. Step 6: Final answer
    x = 318,186.39

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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.