Home / 397,913.45-549,102.66-216,620.75

Finding the Fourth Proportional to 397,913.45, 549,102.66 and 216,620.75

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Solution

The fourth proportional to 397,913.45, 549,102.66 and 216,620.75 is: 298,926.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,913.45 : 549,102.66 = 216,620.75 : x
  2. Step 2: Convert to fraction form
    397,913.45/549,102.66 = 216,620.75/x
  3. Step 3: Cross multiply
    397,913.45x = 549,102.66 × 216,620.75
  4. Step 4: Simplify right side
    397,913.45x = 118,947,030,036.20
  5. Step 5: Solve for x
    x = 118,947,030,036.20/397,913.45
  6. Step 6: Final answer
    x = 298,926.89

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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.