Home / 397,926.58-549,142-216,639.77

Finding the Fourth Proportional to 397,926.58, 549,142 and 216,639.77

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Solution

The fourth proportional to 397,926.58, 549,142 and 216,639.77 is: 298,964.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,926.58 : 549,142 = 216,639.77 : x
  2. Step 2: Convert to fraction form
    397,926.58/549,142 = 216,639.77/x
  3. Step 3: Cross multiply
    397,926.58x = 549,142 × 216,639.77
  4. Step 4: Simplify right side
    397,926.58x = 118,965,996,577.34
  5. Step 5: Solve for x
    x = 118,965,996,577.34/397,926.58
  6. Step 6: Final answer
    x = 298,964.69

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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.