Home / 257,573.02-386,357.64-80,079.70

Finding the Fourth Proportional to 257,573.02, 386,357.64 and 80,079.70

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Solution

The fourth proportional to 257,573.02, 386,357.64 and 80,079.70 is: 120,118.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,573.02 : 386,357.64 = 80,079.70 : x
  2. Step 2: Convert to fraction form
    257,573.02/386,357.64 = 80,079.70/x
  3. Step 3: Cross multiply
    257,573.02x = 386,357.64 × 80,079.70
  4. Step 4: Simplify right side
    257,573.02x = 30,939,403,903.91
  5. Step 5: Solve for x
    x = 30,939,403,903.91/257,573.02
  6. Step 6: Final answer
    x = 120,118.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.