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Finding the Fourth Proportional to 387,518.67, 534,552.81 and 242,071.61

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Solution

The fourth proportional to 387,518.67, 534,552.81 and 242,071.61 is: 333,919.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,518.67 : 534,552.81 = 242,071.61 : x
  2. Step 2: Convert to fraction form
    387,518.67/534,552.81 = 242,071.61/x
  3. Step 3: Cross multiply
    387,518.67x = 534,552.81 × 242,071.61
  4. Step 4: Simplify right side
    387,518.67x = 129,400,056,673.96
  5. Step 5: Solve for x
    x = 129,400,056,673.96/387,518.67
  6. Step 6: Final answer
    x = 333,919.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.