Home / 389,479.41-537,483.20-210,631.41

Finding the Fourth Proportional to 389,479.41, 537,483.20 and 210,631.41

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Solution

The fourth proportional to 389,479.41, 537,483.20 and 210,631.41 is: 290,672.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,479.41 : 537,483.20 = 210,631.41 : x
  2. Step 2: Convert to fraction form
    389,479.41/537,483.20 = 210,631.41/x
  3. Step 3: Cross multiply
    389,479.41x = 537,483.20 × 210,631.41
  4. Step 4: Simplify right side
    389,479.41x = 113,210,844,793.89
  5. Step 5: Solve for x
    x = 113,210,844,793.89/389,479.41
  6. Step 6: Final answer
    x = 290,672.22

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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.