Home / 389,977.84-538,172.98-228,835.56

Finding the Fourth Proportional to 389,977.84, 538,172.98 and 228,835.56

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Solution

The fourth proportional to 389,977.84, 538,172.98 and 228,835.56 is: 315,795.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,977.84 : 538,172.98 = 228,835.56 : x
  2. Step 2: Convert to fraction form
    389,977.84/538,172.98 = 228,835.56/x
  3. Step 3: Cross multiply
    389,977.84x = 538,172.98 × 228,835.56
  4. Step 4: Simplify right side
    389,977.84x = 123,153,116,701.23
  5. Step 5: Solve for x
    x = 123,153,116,701.23/389,977.84
  6. Step 6: Final answer
    x = 315,795.16

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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.