Home / 279,406.06-385,569.64-158,540.14

Finding the Fourth Proportional to 279,406.06, 385,569.64 and 158,540.14

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Solution

The fourth proportional to 279,406.06, 385,569.64 and 158,540.14 is: 218,779.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,406.06 : 385,569.64 = 158,540.14 : x
  2. Step 2: Convert to fraction form
    279,406.06/385,569.64 = 158,540.14/x
  3. Step 3: Cross multiply
    279,406.06x = 385,569.64 × 158,540.14
  4. Step 4: Simplify right side
    279,406.06x = 61,128,263,662.55
  5. Step 5: Solve for x
    x = 61,128,263,662.55/279,406.06
  6. Step 6: Final answer
    x = 218,779.31

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1.5x scale

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.