Home / 397,890.72-549,072.38-216,598.88

Finding the Fourth Proportional to 397,890.72, 549,072.38 and 216,598.88

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Solution

The fourth proportional to 397,890.72, 549,072.38 and 216,598.88 is: 298,897.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,890.72 : 549,072.38 = 216,598.88 : x
  2. Step 2: Convert to fraction form
    397,890.72/549,072.38 = 216,598.88/x
  3. Step 3: Cross multiply
    397,890.72x = 549,072.38 × 216,598.88
  4. Step 4: Simplify right side
    397,890.72x = 118,928,458,718.58
  5. Step 5: Solve for x
    x = 118,928,458,718.58/397,890.72
  6. Step 6: Final answer
    x = 298,897.29

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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.