Home / 397,929.38-549,145.86-216,642.56

Finding the Fourth Proportional to 397,929.38, 549,145.86 and 216,642.56

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Solution

The fourth proportional to 397,929.38, 549,145.86 and 216,642.56 is: 298,968.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,929.38 : 549,145.86 = 216,642.56 : x
  2. Step 2: Convert to fraction form
    397,929.38/549,145.86 = 216,642.56/x
  3. Step 3: Cross multiply
    397,929.38x = 549,145.86 × 216,642.56
  4. Step 4: Simplify right side
    397,929.38x = 118,968,364,923.80
  5. Step 5: Solve for x
    x = 118,968,364,923.80/397,929.38
  6. Step 6: Final answer
    x = 298,968.54

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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.