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Finding the Fourth Proportional to 437,555.70, 656,333.55 and 105,131.70

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Solution

The fourth proportional to 437,555.70, 656,333.55 and 105,131.70 is: 157,697.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,555.70 : 656,333.55 = 105,131.70 : x
  2. Step 2: Convert to fraction form
    437,555.70/656,333.55 = 105,131.70/x
  3. Step 3: Cross multiply
    437,555.70x = 656,333.55 × 105,131.70
  4. Step 4: Simplify right side
    437,555.70x = 69,001,461,878.54
  5. Step 5: Solve for x
    x = 69,001,461,878.54/437,555.70
  6. Step 6: Final answer
    x = 157,697.55

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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.