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Finding the Fourth Proportional to 398,227.60, 549,554.08 and 219,379.60

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Solution

The fourth proportional to 398,227.60, 549,554.08 and 219,379.60 is: 302,743.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,227.60 : 549,554.08 = 219,379.60 : x
  2. Step 2: Convert to fraction form
    398,227.60/549,554.08 = 219,379.60/x
  3. Step 3: Cross multiply
    398,227.60x = 549,554.08 × 219,379.60
  4. Step 4: Simplify right side
    398,227.60x = 120,560,954,248.77
  5. Step 5: Solve for x
    x = 120,560,954,248.77/398,227.60
  6. Step 6: Final answer
    x = 302,743.84

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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.