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Finding the Fourth Proportional to 286,911, 395,937.18 and 167,679

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Solution

The fourth proportional to 286,911, 395,937.18 and 167,679 is: 231,397.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,911 : 395,937.18 = 167,679 : x
  2. Step 2: Convert to fraction form
    286,911/395,937.18 = 167,679/x
  3. Step 3: Cross multiply
    286,911x = 395,937.18 × 167,679
  4. Step 4: Simplify right side
    286,911x = 66,390,350,405.22
  5. Step 5: Solve for x
    x = 66,390,350,405.22/286,911
  6. Step 6: Final answer
    x = 231,397.02

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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.