Home / 389,479.32-537,488.46-228,450.78

Finding the Fourth Proportional to 389,479.32, 537,488.46 and 228,450.78

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Solution

The fourth proportional to 389,479.32, 537,488.46 and 228,450.78 is: 315,266.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,479.32 : 537,488.46 = 228,450.78 : x
  2. Step 2: Convert to fraction form
    389,479.32/537,488.46 = 228,450.78/x
  3. Step 3: Cross multiply
    389,479.32x = 537,488.46 × 228,450.78
  4. Step 4: Simplify right side
    389,479.32x = 122,789,657,928.00
  5. Step 5: Solve for x
    x = 122,789,657,928.00/389,479.32
  6. Step 6: Final answer
    x = 315,266.18

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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.