Home / 280,918.42-387,664.77-153,592.66

Finding the Fourth Proportional to 280,918.42, 387,664.77 and 153,592.66

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Solution

The fourth proportional to 280,918.42, 387,664.77 and 153,592.66 is: 211,956.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,918.42 : 387,664.77 = 153,592.66 : x
  2. Step 2: Convert to fraction form
    280,918.42/387,664.77 = 153,592.66/x
  3. Step 3: Cross multiply
    280,918.42x = 387,664.77 × 153,592.66
  4. Step 4: Simplify right side
    280,918.42x = 59,542,463,212.59
  5. Step 5: Solve for x
    x = 59,542,463,212.59/280,918.42
  6. Step 6: Final answer
    x = 211,956.42

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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.