Home / 389,897.90-538,099.05-281,091.92

Finding the Fourth Proportional to 389,897.90, 538,099.05 and 281,091.92

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Solution

The fourth proportional to 389,897.90, 538,099.05 and 281,091.92 is: 387,935.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,897.90 : 538,099.05 = 281,091.92 : x
  2. Step 2: Convert to fraction form
    389,897.90/538,099.05 = 281,091.92/x
  3. Step 3: Cross multiply
    389,897.90x = 538,099.05 × 281,091.92
  4. Step 4: Simplify right side
    389,897.90x = 151,255,294,923.94
  5. Step 5: Solve for x
    x = 151,255,294,923.94/389,897.90
  6. Step 6: Final answer
    x = 387,935.64

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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.