Home / 397,921.60-549,121.44-216,637.12

Finding the Fourth Proportional to 397,921.60, 549,121.44 and 216,637.12

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Solution

The fourth proportional to 397,921.60, 549,121.44 and 216,637.12 is: 298,953.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,921.60 : 549,121.44 = 216,637.12 : x
  2. Step 2: Convert to fraction form
    397,921.60/549,121.44 = 216,637.12/x
  3. Step 3: Cross multiply
    397,921.60x = 549,121.44 × 216,637.12
  4. Step 4: Simplify right side
    397,921.60x = 118,960,087,291.85
  5. Step 5: Solve for x
    x = 118,960,087,291.85/397,921.60
  6. Step 6: Final answer
    x = 298,953.58

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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.