Home / 257,977.65-355,997.18-143,263.57

Finding the Fourth Proportional to 257,977.65, 355,997.18 and 143,263.57

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Solution

The fourth proportional to 257,977.65, 355,997.18 and 143,263.57 is: 197,697.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,977.65 : 355,997.18 = 143,263.57 : x
  2. Step 2: Convert to fraction form
    257,977.65/355,997.18 = 143,263.57/x
  3. Step 3: Cross multiply
    257,977.65x = 355,997.18 × 143,263.57
  4. Step 4: Simplify right side
    257,977.65x = 51,001,426,916.73
  5. Step 5: Solve for x
    x = 51,001,426,916.73/257,977.65
  6. Step 6: Final answer
    x = 197,697.08

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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.