Home / 278,829.18-384,885.81-171,543.06

Finding the Fourth Proportional to 278,829.18, 384,885.81 and 171,543.06

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Solution

The fourth proportional to 278,829.18, 384,885.81 and 171,543.06 is: 236,791.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,829.18 : 384,885.81 = 171,543.06 : x
  2. Step 2: Convert to fraction form
    278,829.18/384,885.81 = 171,543.06/x
  3. Step 3: Cross multiply
    278,829.18x = 384,885.81 × 171,543.06
  4. Step 4: Simplify right side
    278,829.18x = 66,024,489,597.98
  5. Step 5: Solve for x
    x = 66,024,489,597.98/278,829.18
  6. Step 6: Final answer
    x = 236,791.89

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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.