Home / 389,927.93-538,081.28-217,811.73

Finding the Fourth Proportional to 389,927.93, 538,081.28 and 217,811.73

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Solution

The fourth proportional to 389,927.93, 538,081.28 and 217,811.73 is: 300,569.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,927.93 : 538,081.28 = 217,811.73 : x
  2. Step 2: Convert to fraction form
    389,927.93/538,081.28 = 217,811.73/x
  3. Step 3: Cross multiply
    389,927.93x = 538,081.28 × 217,811.73
  4. Step 4: Simplify right side
    389,927.93x = 117,200,416,222.96
  5. Step 5: Solve for x
    x = 117,200,416,222.96/389,927.93
  6. Step 6: Final answer
    x = 300,569.44

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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.