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Finding the Fourth Proportional to 358,383.80, 537,575.70 and 319,676.60

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Solution

The fourth proportional to 358,383.80, 537,575.70 and 319,676.60 is: 479,514.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,383.80 : 537,575.70 = 319,676.60 : x
  2. Step 2: Convert to fraction form
    358,383.80/537,575.70 = 319,676.60/x
  3. Step 3: Cross multiply
    358,383.80x = 537,575.70 × 319,676.60
  4. Step 4: Simplify right side
    358,383.80x = 171,850,372,018.62
  5. Step 5: Solve for x
    x = 171,850,372,018.62/358,383.80
  6. Step 6: Final answer
    x = 479,514.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.