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Finding the Fourth Proportional to 437,491.40, 656,237.10 and 331,203.20

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Solution

The fourth proportional to 437,491.40, 656,237.10 and 331,203.20 is: 496,804.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,491.40 : 656,237.10 = 331,203.20 : x
  2. Step 2: Convert to fraction form
    437,491.40/656,237.10 = 331,203.20/x
  3. Step 3: Cross multiply
    437,491.40x = 656,237.10 × 331,203.20
  4. Step 4: Simplify right side
    437,491.40x = 217,347,827,478.72
  5. Step 5: Solve for x
    x = 217,347,827,478.72/437,491.40
  6. Step 6: Final answer
    x = 496,804.80

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1.5x scale

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.