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Finding the Fourth Proportional to 386,678.46, 580,081.93 and 162,055.79

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Solution

The fourth proportional to 386,678.46, 580,081.93 and 162,055.79 is: 243,110.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,678.46 : 580,081.93 = 162,055.79 : x
  2. Step 2: Convert to fraction form
    386,678.46/580,081.93 = 162,055.79/x
  3. Step 3: Cross multiply
    386,678.46x = 580,081.93 × 162,055.79
  4. Step 4: Simplify right side
    386,678.46x = 94,005,635,430.87
  5. Step 5: Solve for x
    x = 94,005,635,430.87/386,678.46
  6. Step 6: Final answer
    x = 243,110.61

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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.