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Finding the Fourth Proportional to 398,149.04, 549,445.60 and 219,301.04

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Solution

The fourth proportional to 398,149.04, 549,445.60 and 219,301.04 is: 302,635.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,149.04 : 549,445.60 = 219,301.04 : x
  2. Step 2: Convert to fraction form
    398,149.04/549,445.60 = 219,301.04/x
  3. Step 3: Cross multiply
    398,149.04x = 549,445.60 × 219,301.04
  4. Step 4: Simplify right side
    398,149.04x = 120,493,991,503.42
  5. Step 5: Solve for x
    x = 120,493,991,503.42/398,149.04
  6. Step 6: Final answer
    x = 302,635.39

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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.