Home / 257,852.04-386,776.92-80,359.20

Finding the Fourth Proportional to 257,852.04, 386,776.92 and 80,359.20

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Solution

The fourth proportional to 257,852.04, 386,776.92 and 80,359.20 is: 120,538.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,852.04 : 386,776.92 = 80,359.20 : x
  2. Step 2: Convert to fraction form
    257,852.04/386,776.92 = 80,359.20/x
  3. Step 3: Cross multiply
    257,852.04x = 386,776.92 × 80,359.20
  4. Step 4: Simplify right side
    257,852.04x = 31,081,083,869.66
  5. Step 5: Solve for x
    x = 31,081,083,869.66/257,852.04
  6. Step 6: Final answer
    x = 120,538.44

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1.5x scale

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.