Home / 257,840.02-355,821.96-143,120.80

Finding the Fourth Proportional to 257,840.02, 355,821.96 and 143,120.80

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Solution

The fourth proportional to 257,840.02, 355,821.96 and 143,120.80 is: 197,508.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,840.02 : 355,821.96 = 143,120.80 : x
  2. Step 2: Convert to fraction form
    257,840.02/355,821.96 = 143,120.80/x
  3. Step 3: Cross multiply
    257,840.02x = 355,821.96 × 143,120.80
  4. Step 4: Simplify right side
    257,840.02x = 50,925,523,572.77
  5. Step 5: Solve for x
    x = 50,925,523,572.77/257,840.02
  6. Step 6: Final answer
    x = 197,508.22

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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.