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Finding the Fourth Proportional to 389,300.74, 537,247.84 and 225,944.90

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Solution

The fourth proportional to 389,300.74, 537,247.84 and 225,944.90 is: 311,811.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,300.74 : 537,247.84 = 225,944.90 : x
  2. Step 2: Convert to fraction form
    389,300.74/537,247.84 = 225,944.90/x
  3. Step 3: Cross multiply
    389,300.74x = 537,247.84 × 225,944.90
  4. Step 4: Simplify right side
    389,300.74x = 121,388,409,484.02
  5. Step 5: Solve for x
    x = 121,388,409,484.02/389,300.74
  6. Step 6: Final answer
    x = 311,811.40

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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.