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Finding the Fourth Proportional to 387,777.96, 581,666.94 and 121,559.04

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Solution

The fourth proportional to 387,777.96, 581,666.94 and 121,559.04 is: 182,338.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,777.96 : 581,666.94 = 121,559.04 : x
  2. Step 2: Convert to fraction form
    387,777.96/581,666.94 = 121,559.04/x
  3. Step 3: Cross multiply
    387,777.96x = 581,666.94 × 121,559.04
  4. Step 4: Simplify right side
    387,777.96x = 70,706,874,826.14
  5. Step 5: Solve for x
    x = 70,706,874,826.14/387,777.96
  6. Step 6: Final answer
    x = 182,338.56

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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.