Home / 257,135.23-384,139.16-166,439.13

Finding the Fourth Proportional to 257,135.23, 384,139.16 and 166,439.13

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Solution

The fourth proportional to 257,135.23, 384,139.16 and 166,439.13 is: 248,646.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,135.23 : 384,139.16 = 166,439.13 : x
  2. Step 2: Convert to fraction form
    257,135.23/384,139.16 = 166,439.13/x
  3. Step 3: Cross multiply
    257,135.23x = 384,139.16 × 166,439.13
  4. Step 4: Simplify right side
    257,135.23x = 63,935,784,836.44
  5. Step 5: Solve for x
    x = 63,935,784,836.44/257,135.23
  6. Step 6: Final answer
    x = 248,646.54

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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.