Home / 307,090.20-423,778.86-172,954.20

Finding the Fourth Proportional to 307,090.20, 423,778.86 and 172,954.20

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Solution

The fourth proportional to 307,090.20, 423,778.86 and 172,954.20 is: 238,673.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,090.20 : 423,778.86 = 172,954.20 : x
  2. Step 2: Convert to fraction form
    307,090.20/423,778.86 = 172,954.20/x
  3. Step 3: Cross multiply
    307,090.20x = 423,778.86 × 172,954.20
  4. Step 4: Simplify right side
    307,090.20x = 73,294,333,708.21
  5. Step 5: Solve for x
    x = 73,294,333,708.21/307,090.20
  6. Step 6: Final answer
    x = 238,673.63

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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.