Home / 486,971.49-730,457.24-131,985.51

Finding the Fourth Proportional to 486,971.49, 730,457.24 and 131,985.51

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Solution

The fourth proportional to 486,971.49, 730,457.24 and 131,985.51 is: 197,978.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,971.49 : 730,457.24 = 131,985.51 : x
  2. Step 2: Convert to fraction form
    486,971.49/730,457.24 = 131,985.51/x
  3. Step 3: Cross multiply
    486,971.49x = 730,457.24 × 131,985.51
  4. Step 4: Simplify right side
    486,971.49x = 96,409,770,694.66
  5. Step 5: Solve for x
    x = 96,409,770,694.66/486,971.49
  6. Step 6: Final answer
    x = 197,978.27

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Double scale
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Similar ratio
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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.