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Finding the Fourth Proportional to 398,339.35, 549,708.36 and 217,051.33

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Solution

The fourth proportional to 398,339.35, 549,708.36 and 217,051.33 is: 299,530.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,339.35 : 549,708.36 = 217,051.33 : x
  2. Step 2: Convert to fraction form
    398,339.35/549,708.36 = 217,051.33/x
  3. Step 3: Cross multiply
    398,339.35x = 549,708.36 × 217,051.33
  4. Step 4: Simplify right side
    398,339.35x = 119,314,930,650.12
  5. Step 5: Solve for x
    x = 119,314,930,650.12/398,339.35
  6. Step 6: Final answer
    x = 299,530.87

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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.