Home / 230,457.55-318,032.75-128,489.43

Finding the Fourth Proportional to 230,457.55, 318,032.75 and 128,489.43

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Solution

The fourth proportional to 230,457.55, 318,032.75 and 128,489.43 is: 177,316.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,457.55 : 318,032.75 = 128,489.43 : x
  2. Step 2: Convert to fraction form
    230,457.55/318,032.75 = 128,489.43/x
  3. Step 3: Cross multiply
    230,457.55x = 318,032.75 × 128,489.43
  4. Step 4: Simplify right side
    230,457.55x = 40,863,847,090.06
  5. Step 5: Solve for x
    x = 40,863,847,090.06/230,457.55
  6. Step 6: Final answer
    x = 177,316.16

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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.