Home / 397,922.85-549,123.17-216,638.37

Finding the Fourth Proportional to 397,922.85, 549,123.17 and 216,638.37

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Solution

The fourth proportional to 397,922.85, 549,123.17 and 216,638.37 is: 298,955.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,922.85 : 549,123.17 = 216,638.37 : x
  2. Step 2: Convert to fraction form
    397,922.85/549,123.17 = 216,638.37/x
  3. Step 3: Cross multiply
    397,922.85x = 549,123.17 × 216,638.37
  4. Step 4: Simplify right side
    397,922.85x = 118,961,147,394.84
  5. Step 5: Solve for x
    x = 118,961,147,394.84/397,922.85
  6. Step 6: Final answer
    x = 298,955.31

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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.