Home / 386,103.06-578,650.19-215,317.96

Finding the Fourth Proportional to 386,103.06, 578,650.19 and 215,317.96

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Solution

The fourth proportional to 386,103.06, 578,650.19 and 215,317.96 is: 322,695.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,103.06 : 578,650.19 = 215,317.96 : x
  2. Step 2: Convert to fraction form
    386,103.06/578,650.19 = 215,317.96/x
  3. Step 3: Cross multiply
    386,103.06x = 578,650.19 × 215,317.96
  4. Step 4: Simplify right side
    386,103.06x = 124,593,776,109.46
  5. Step 5: Solve for x
    x = 124,593,776,109.46/386,103.06
  6. Step 6: Final answer
    x = 322,695.65

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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.