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Finding the Fourth Proportional to 386,346.36, 579,601.62 and 120,100.44

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Solution

The fourth proportional to 386,346.36, 579,601.62 and 120,100.44 is: 180,176.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,346.36 : 579,601.62 = 120,100.44 : x
  2. Step 2: Convert to fraction form
    386,346.36/579,601.62 = 120,100.44/x
  3. Step 3: Cross multiply
    386,346.36x = 579,601.62 × 120,100.44
  4. Step 4: Simplify right side
    386,346.36x = 69,610,409,586.71
  5. Step 5: Solve for x
    x = 69,610,409,586.71/386,346.36
  6. Step 6: Final answer
    x = 180,176.18

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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.