Home / 257,931.68-355,980.48-144,760.64

Finding the Fourth Proportional to 257,931.68, 355,980.48 and 144,760.64

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Solution

The fourth proportional to 257,931.68, 355,980.48 and 144,760.64 is: 199,789.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,931.68 : 355,980.48 = 144,760.64 : x
  2. Step 2: Convert to fraction form
    257,931.68/355,980.48 = 144,760.64/x
  3. Step 3: Cross multiply
    257,931.68x = 355,980.48 × 144,760.64
  4. Step 4: Simplify right side
    257,931.68x = 51,531,962,112.31
  5. Step 5: Solve for x
    x = 51,531,962,112.31/257,931.68
  6. Step 6: Final answer
    x = 199,789.19

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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.