Home / 257,720.46-355,671.99-144,550.50

Finding the Fourth Proportional to 257,720.46, 355,671.99 and 144,550.50

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Solution

The fourth proportional to 257,720.46, 355,671.99 and 144,550.50 is: 199,489.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,720.46 : 355,671.99 = 144,550.50 : x
  2. Step 2: Convert to fraction form
    257,720.46/355,671.99 = 144,550.50/x
  3. Step 3: Cross multiply
    257,720.46x = 355,671.99 × 144,550.50
  4. Step 4: Simplify right side
    257,720.46x = 51,412,563,990.50
  5. Step 5: Solve for x
    x = 51,412,563,990.50/257,720.46
  6. Step 6: Final answer
    x = 199,489.65

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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.