Home / 261,195.49-392,252.64-257,455.72

Finding the Fourth Proportional to 261,195.49, 392,252.64 and 257,455.72

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Solution

The fourth proportional to 261,195.49, 392,252.64 and 257,455.72 is: 386,636.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,195.49 : 392,252.64 = 257,455.72 : x
  2. Step 2: Convert to fraction form
    261,195.49/392,252.64 = 257,455.72/x
  3. Step 3: Cross multiply
    261,195.49x = 392,252.64 × 257,455.72
  4. Step 4: Simplify right side
    261,195.49x = 100,987,685,853.10
  5. Step 5: Solve for x
    x = 100,987,685,853.10/261,195.49
  6. Step 6: Final answer
    x = 386,636.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.