Home / 318,193.40-439,064.64-197,290.58

Finding the Fourth Proportional to 318,193.40, 439,064.64 and 197,290.58

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Solution

The fourth proportional to 318,193.40, 439,064.64 and 197,290.58 is: 272,234.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,193.40 : 439,064.64 = 197,290.58 : x
  2. Step 2: Convert to fraction form
    318,193.40/439,064.64 = 197,290.58/x
  3. Step 3: Cross multiply
    318,193.40x = 439,064.64 × 197,290.58
  4. Step 4: Simplify right side
    318,193.40x = 86,623,317,483.09
  5. Step 5: Solve for x
    x = 86,623,317,483.09/318,193.40
  6. Step 6: Final answer
    x = 272,234.80

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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.