Home / 257,645.30-355,552.65-142,931.45

Finding the Fourth Proportional to 257,645.30, 355,552.65 and 142,931.45

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Solution

The fourth proportional to 257,645.30, 355,552.65 and 142,931.45 is: 197,246.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,645.30 : 355,552.65 = 142,931.45 : x
  2. Step 2: Convert to fraction form
    257,645.30/355,552.65 = 142,931.45/x
  3. Step 3: Cross multiply
    257,645.30x = 355,552.65 × 142,931.45
  4. Step 4: Simplify right side
    257,645.30x = 50,819,656,704.72
  5. Step 5: Solve for x
    x = 50,819,656,704.72/257,645.30
  6. Step 6: Final answer
    x = 197,246.59

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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.