Home / 397,911.45-549,099.90-216,618.75

Finding the Fourth Proportional to 397,911.45, 549,099.90 and 216,618.75

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Solution

The fourth proportional to 397,911.45, 549,099.90 and 216,618.75 is: 298,924.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,911.45 : 549,099.90 = 216,618.75 : x
  2. Step 2: Convert to fraction form
    397,911.45/549,099.90 = 216,618.75/x
  3. Step 3: Cross multiply
    397,911.45x = 549,099.90 × 216,618.75
  4. Step 4: Simplify right side
    397,911.45x = 118,945,333,963.13
  5. Step 5: Solve for x
    x = 118,945,333,963.13/397,911.45
  6. Step 6: Final answer
    x = 298,924.13

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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.