Home / 389,851.77-537,999.93-228,709.56

Finding the Fourth Proportional to 389,851.77, 537,999.93 and 228,709.56

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Solution

The fourth proportional to 389,851.77, 537,999.93 and 228,709.56 is: 315,621.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,851.77 : 537,999.93 = 228,709.56 : x
  2. Step 2: Convert to fraction form
    389,851.77/537,999.93 = 228,709.56/x
  3. Step 3: Cross multiply
    389,851.77x = 537,999.93 × 228,709.56
  4. Step 4: Simplify right side
    389,851.77x = 123,045,727,270.33
  5. Step 5: Solve for x
    x = 123,045,727,270.33/389,851.77
  6. Step 6: Final answer
    x = 315,621.83

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1.5x scale

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.