Home / 257,139.26-384,145.18-166,443.15

Finding the Fourth Proportional to 257,139.26, 384,145.18 and 166,443.15

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Solution

The fourth proportional to 257,139.26, 384,145.18 and 166,443.15 is: 248,652.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,139.26 : 384,145.18 = 166,443.15 : x
  2. Step 2: Convert to fraction form
    257,139.26/384,145.18 = 166,443.15/x
  3. Step 3: Cross multiply
    257,139.26x = 384,145.18 × 166,443.15
  4. Step 4: Simplify right side
    257,139.26x = 63,938,335,777.20
  5. Step 5: Solve for x
    x = 63,938,335,777.20/257,139.26
  6. Step 6: Final answer
    x = 248,652.56

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.