Home / 257,472,487.35-355,309,556.13-139,997,862.54

Finding the Fourth Proportional to 257,472,487.35, 355,309,556.13 and 139,997,862.54

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Solution

The fourth proportional to 257,472,487.35, 355,309,556.13 and 139,997,862.54 is: 193,195,703.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,472,487.35 : 355,309,556.13 = 139,997,862.54 : x
  2. Step 2: Convert to fraction form
    257,472,487.35/355,309,556.13 = 139,997,862.54/x
  3. Step 3: Cross multiply
    257,472,487.35x = 355,309,556.13 × 139,997,862.54
  4. Step 4: Simplify right side
    257,472,487.35x = 49,742,578,398,236,152
  5. Step 5: Solve for x
    x = 49,742,578,398,236,152/257,472,487.35
  6. Step 6: Final answer
    x = 193,195,703.78

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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.