Home / 285,090.83-393,420.34-164,231.75

Finding the Fourth Proportional to 285,090.83, 393,420.34 and 164,231.75

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Solution

The fourth proportional to 285,090.83, 393,420.34 and 164,231.75 is: 226,636.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,090.83 : 393,420.34 = 164,231.75 : x
  2. Step 2: Convert to fraction form
    285,090.83/393,420.34 = 164,231.75/x
  3. Step 3: Cross multiply
    285,090.83x = 393,420.34 × 164,231.75
  4. Step 4: Simplify right side
    285,090.83x = 64,612,110,923.80
  5. Step 5: Solve for x
    x = 64,612,110,923.80/285,090.83
  6. Step 6: Final answer
    x = 226,636.93

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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.