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Finding the Fourth Proportional to 437,980.77, 656,971.16 and 105,556.77

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Solution

The fourth proportional to 437,980.77, 656,971.16 and 105,556.77 is: 158,335.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,980.77 : 656,971.16 = 105,556.77 : x
  2. Step 2: Convert to fraction form
    437,980.77/656,971.16 = 105,556.77/x
  3. Step 3: Cross multiply
    437,980.77x = 656,971.16 × 105,556.77
  4. Step 4: Simplify right side
    437,980.77x = 69,347,753,104.97
  5. Step 5: Solve for x
    x = 69,347,753,104.97/437,980.77
  6. Step 6: Final answer
    x = 158,335.16

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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.