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Finding the Fourth Proportional to 437,571.13, 656,356.70 and 105,147.13

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Solution

The fourth proportional to 437,571.13, 656,356.70 and 105,147.13 is: 157,720.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,571.13 : 656,356.70 = 105,147.13 : x
  2. Step 2: Convert to fraction form
    437,571.13/656,356.70 = 105,147.13/x
  3. Step 3: Cross multiply
    437,571.13x = 656,356.70 × 105,147.13
  4. Step 4: Simplify right side
    437,571.13x = 69,014,023,261.27
  5. Step 5: Solve for x
    x = 69,014,023,261.27/437,571.13
  6. Step 6: Final answer
    x = 157,720.70

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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.