Home / 279,687.34-385,971.18-158,831.14

Finding the Fourth Proportional to 279,687.34, 385,971.18 and 158,831.14

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Solution

The fourth proportional to 279,687.34, 385,971.18 and 158,831.14 is: 219,188.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,687.34 : 385,971.18 = 158,831.14 : x
  2. Step 2: Convert to fraction form
    279,687.34/385,971.18 = 158,831.14/x
  3. Step 3: Cross multiply
    279,687.34x = 385,971.18 × 158,831.14
  4. Step 4: Simplify right side
    279,687.34x = 61,304,242,526.55
  5. Step 5: Solve for x
    x = 61,304,242,526.55/279,687.34
  6. Step 6: Final answer
    x = 219,188.48

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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.