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Finding the Fourth Proportional to 386,880.46, 580,484.72 and 187,349.51

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Solution

The fourth proportional to 386,880.46, 580,484.72 and 187,349.51 is: 281,103.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,880.46 : 580,484.72 = 187,349.51 : x
  2. Step 2: Convert to fraction form
    386,880.46/580,484.72 = 187,349.51/x
  3. Step 3: Cross multiply
    386,880.46x = 580,484.72 × 187,349.51
  4. Step 4: Simplify right side
    386,880.46x = 108,753,529,774.07
  5. Step 5: Solve for x
    x = 108,753,529,774.07/386,880.46
  6. Step 6: Final answer
    x = 281,103.70

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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.