Home / 291,315.36-402,022.80-163,995.60

Finding the Fourth Proportional to 291,315.36, 402,022.80 and 163,995.60

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Solution

The fourth proportional to 291,315.36, 402,022.80 and 163,995.60 is: 226,318.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,315.36 : 402,022.80 = 163,995.60 : x
  2. Step 2: Convert to fraction form
    291,315.36/402,022.80 = 163,995.60/x
  3. Step 3: Cross multiply
    291,315.36x = 402,022.80 × 163,995.60
  4. Step 4: Simplify right side
    291,315.36x = 65,929,970,299.68
  5. Step 5: Solve for x
    x = 65,929,970,299.68/291,315.36
  6. Step 6: Final answer
    x = 226,318.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.