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Finding the Fourth Proportional to 280,566.36, 387,170.37 and 158,055.87

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Solution

The fourth proportional to 280,566.36, 387,170.37 and 158,055.87 is: 218,110.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,566.36 : 387,170.37 = 158,055.87 : x
  2. Step 2: Convert to fraction form
    280,566.36/387,170.37 = 158,055.87/x
  3. Step 3: Cross multiply
    280,566.36x = 387,170.37 × 158,055.87
  4. Step 4: Simplify right side
    280,566.36x = 61,194,549,668.57
  5. Step 5: Solve for x
    x = 61,194,549,668.57/280,566.36
  6. Step 6: Final answer
    x = 218,110.79

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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.