Home / 386,104.06-578,651.69-215,318.96

Finding the Fourth Proportional to 386,104.06, 578,651.69 and 215,318.96

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Solution

The fourth proportional to 386,104.06, 578,651.69 and 215,318.96 is: 322,697.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,104.06 : 578,651.69 = 215,318.96 : x
  2. Step 2: Convert to fraction form
    386,104.06/578,651.69 = 215,318.96/x
  3. Step 3: Cross multiply
    386,104.06x = 578,651.69 × 215,318.96
  4. Step 4: Simplify right side
    386,104.06x = 124,594,677,199.78
  5. Step 5: Solve for x
    x = 124,594,677,199.78/386,104.06
  6. Step 6: Final answer
    x = 322,697.14

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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.