Home / 279,001.31-385,051.86-158,129.60

Finding the Fourth Proportional to 279,001.31, 385,051.86 and 158,129.60

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Solution

The fourth proportional to 279,001.31, 385,051.86 and 158,129.60 is: 218,235.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,001.31 : 385,051.86 = 158,129.60 : x
  2. Step 2: Convert to fraction form
    279,001.31/385,051.86 = 158,129.60/x
  3. Step 3: Cross multiply
    279,001.31x = 385,051.86 × 158,129.60
  4. Step 4: Simplify right side
    279,001.31x = 60,888,094,675.80
  5. Step 5: Solve for x
    x = 60,888,094,675.80/279,001.31
  6. Step 6: Final answer
    x = 218,235.88

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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.