Home / 257,855.10-355,822.20-143,124.72

Finding the Fourth Proportional to 257,855.10, 355,822.20 and 143,124.72

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Solution

The fourth proportional to 257,855.10, 355,822.20 and 143,124.72 is: 197,502.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,855.10 : 355,822.20 = 143,124.72 : x
  2. Step 2: Convert to fraction form
    257,855.10/355,822.20 = 143,124.72/x
  3. Step 3: Cross multiply
    257,855.10x = 355,822.20 × 143,124.72
  4. Step 4: Simplify right side
    257,855.10x = 50,926,952,744.78
  5. Step 5: Solve for x
    x = 50,926,952,744.78/257,855.10
  6. Step 6: Final answer
    x = 197,502.21

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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.