Home / 257,537.54-386,417.30-139,292.12

Finding the Fourth Proportional to 257,537.54, 386,417.30 and 139,292.12

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Solution

The fourth proportional to 257,537.54, 386,417.30 and 139,292.12 is: 208,998.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,537.54 : 386,417.30 = 139,292.12 : x
  2. Step 2: Convert to fraction form
    257,537.54/386,417.30 = 139,292.12/x
  3. Step 3: Cross multiply
    257,537.54x = 386,417.30 × 139,292.12
  4. Step 4: Simplify right side
    257,537.54x = 53,824,883,337.82
  5. Step 5: Solve for x
    x = 53,824,883,337.82/257,537.54
  6. Step 6: Final answer
    x = 208,998.21

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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.