Home / 397,928.10-549,146.34-216,645.51

Finding the Fourth Proportional to 397,928.10, 549,146.34 and 216,645.51

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Solution

The fourth proportional to 397,928.10, 549,146.34 and 216,645.51 is: 298,973.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,928.10 : 549,146.34 = 216,645.51 : x
  2. Step 2: Convert to fraction form
    397,928.10/549,146.34 = 216,645.51/x
  3. Step 3: Cross multiply
    397,928.10x = 549,146.34 × 216,645.51
  4. Step 4: Simplify right side
    397,928.10x = 118,970,088,893.93
  5. Step 5: Solve for x
    x = 118,970,088,893.93/397,928.10
  6. Step 6: Final answer
    x = 298,973.83

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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.