Home / 389,172.85-537,038.03-217,108.80

Finding the Fourth Proportional to 389,172.85, 537,038.03 and 217,108.80

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Solution

The fourth proportional to 389,172.85, 537,038.03 and 217,108.80 is: 299,598.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,172.85 : 537,038.03 = 217,108.80 : x
  2. Step 2: Convert to fraction form
    389,172.85/537,038.03 = 217,108.80/x
  3. Step 3: Cross multiply
    389,172.85x = 537,038.03 × 217,108.80
  4. Step 4: Simplify right side
    389,172.85x = 116,595,682,790.44
  5. Step 5: Solve for x
    x = 116,595,682,790.44/389,172.85
  6. Step 6: Final answer
    x = 299,598.71

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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.