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Finding the Fourth Proportional to 268,885.62, 371,021.04 and 155,686.50

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Solution

The fourth proportional to 268,885.62, 371,021.04 and 155,686.50 is: 214,823.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,885.62 : 371,021.04 = 155,686.50 : x
  2. Step 2: Convert to fraction form
    268,885.62/371,021.04 = 155,686.50/x
  3. Step 3: Cross multiply
    268,885.62x = 371,021.04 × 155,686.50
  4. Step 4: Simplify right side
    268,885.62x = 57,762,967,143.96
  5. Step 5: Solve for x
    x = 57,762,967,143.96/268,885.62
  6. Step 6: Final answer
    x = 214,823.56

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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.