Home / 257,321.10-355,104.15-144,143.94

Finding the Fourth Proportional to 257,321.10, 355,104.15 and 144,143.94

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Solution

The fourth proportional to 257,321.10, 355,104.15 and 144,143.94 is: 198,919.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,321.10 : 355,104.15 = 144,143.94 : x
  2. Step 2: Convert to fraction form
    257,321.10/355,104.15 = 144,143.94/x
  3. Step 3: Cross multiply
    257,321.10x = 355,104.15 × 144,143.94
  4. Step 4: Simplify right side
    257,321.10x = 51,186,111,291.35
  5. Step 5: Solve for x
    x = 51,186,111,291.35/257,321.10
  6. Step 6: Final answer
    x = 198,919.22

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1.5x scale

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.