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Finding the Fourth Proportional to 535,408.08, 738,863.12 and 309,053.58

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Solution

The fourth proportional to 535,408.08, 738,863.12 and 309,053.58 is: 426,493.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,408.08 : 738,863.12 = 309,053.58 : x
  2. Step 2: Convert to fraction form
    535,408.08/738,863.12 = 309,053.58/x
  3. Step 3: Cross multiply
    535,408.08x = 738,863.12 × 309,053.58
  4. Step 4: Simplify right side
    535,408.08x = 228,348,292,365.97
  5. Step 5: Solve for x
    x = 228,348,292,365.97/535,408.08
  6. Step 6: Final answer
    x = 426,493.92

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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.