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Finding the Fourth Proportional to 387,662.77, 581,494.20 and 121,444.05

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Solution

The fourth proportional to 387,662.77, 581,494.20 and 121,444.05 is: 182,166.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,662.77 : 581,494.20 = 121,444.05 : x
  2. Step 2: Convert to fraction form
    387,662.77/581,494.20 = 121,444.05/x
  3. Step 3: Cross multiply
    387,662.77x = 581,494.20 × 121,444.05
  4. Step 4: Simplify right side
    387,662.77x = 70,619,010,699.51
  5. Step 5: Solve for x
    x = 70,619,010,699.51/387,662.77
  6. Step 6: Final answer
    x = 182,166.09

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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.