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Finding the Fourth Proportional to 437,534.90, 656,323.20 and 212,627.39

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Solution

The fourth proportional to 437,534.90, 656,323.20 and 212,627.39 is: 318,951.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,534.90 : 656,323.20 = 212,627.39 : x
  2. Step 2: Convert to fraction form
    437,534.90/656,323.20 = 212,627.39/x
  3. Step 3: Cross multiply
    437,534.90x = 656,323.20 × 212,627.39
  4. Step 4: Simplify right side
    437,534.90x = 139,552,285,730.83
  5. Step 5: Solve for x
    x = 139,552,285,730.83/437,534.90
  6. Step 6: Final answer
    x = 318,951.21

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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.