Home / 257,971.87-355,981.65-144,772.75

Finding the Fourth Proportional to 257,971.87, 355,981.65 and 144,772.75

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Solution

The fourth proportional to 257,971.87, 355,981.65 and 144,772.75 is: 199,775.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,971.87 : 355,981.65 = 144,772.75 : x
  2. Step 2: Convert to fraction form
    257,971.87/355,981.65 = 144,772.75/x
  3. Step 3: Cross multiply
    257,971.87x = 355,981.65 × 144,772.75
  4. Step 4: Simplify right side
    257,971.87x = 51,536,442,420.04
  5. Step 5: Solve for x
    x = 51,536,442,420.04/257,971.87
  6. Step 6: Final answer
    x = 199,775.43

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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.