Home / 397,835.95-549,028.10-216,539.12

Finding the Fourth Proportional to 397,835.95, 549,028.10 and 216,539.12

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Solution

The fourth proportional to 397,835.95, 549,028.10 and 216,539.12 is: 298,831.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,835.95 : 549,028.10 = 216,539.12 : x
  2. Step 2: Convert to fraction form
    397,835.95/549,028.10 = 216,539.12/x
  3. Step 3: Cross multiply
    397,835.95x = 549,028.10 × 216,539.12
  4. Step 4: Simplify right side
    397,835.95x = 118,886,057,801.44
  5. Step 5: Solve for x
    x = 118,886,057,801.44/397,835.95
  6. Step 6: Final answer
    x = 298,831.86

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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.