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Finding the Fourth Proportional to 387,695.07, 580,081.86 and 348,361.92

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Solution

The fourth proportional to 387,695.07, 580,081.86 and 348,361.92 is: 521,230.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,695.07 : 580,081.86 = 348,361.92 : x
  2. Step 2: Convert to fraction form
    387,695.07/580,081.86 = 348,361.92/x
  3. Step 3: Cross multiply
    387,695.07x = 580,081.86 × 348,361.92
  4. Step 4: Simplify right side
    387,695.07x = 202,078,430,506.77
  5. Step 5: Solve for x
    x = 202,078,430,506.77/387,695.07
  6. Step 6: Final answer
    x = 521,230.33

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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.