Home / 279,693.36-385,979.48-158,837.16

Finding the Fourth Proportional to 279,693.36, 385,979.48 and 158,837.16

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Solution

The fourth proportional to 279,693.36, 385,979.48 and 158,837.16 is: 219,196.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,693.36 : 385,979.48 = 158,837.16 : x
  2. Step 2: Convert to fraction form
    279,693.36/385,979.48 = 158,837.16/x
  3. Step 3: Cross multiply
    279,693.36x = 385,979.48 × 158,837.16
  4. Step 4: Simplify right side
    279,693.36x = 61,307,884,421.48
  5. Step 5: Solve for x
    x = 61,307,884,421.48/279,693.36
  6. Step 6: Final answer
    x = 219,196.78

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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.