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Finding the Fourth Proportional to 389,597.58, 537,645.06 and 219,847.50

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Solution

The fourth proportional to 389,597.58, 537,645.06 and 219,847.50 is: 303,389.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,597.58 : 537,645.06 = 219,847.50 : x
  2. Step 2: Convert to fraction form
    389,597.58/537,645.06 = 219,847.50/x
  3. Step 3: Cross multiply
    389,597.58x = 537,645.06 × 219,847.50
  4. Step 4: Simplify right side
    389,597.58x = 118,199,922,328.35
  5. Step 5: Solve for x
    x = 118,199,922,328.35/389,597.58
  6. Step 6: Final answer
    x = 303,389.78

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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.