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Finding the Fourth Proportional to 320,246.60, 479,994.68 and 130,588.58

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Solution

The fourth proportional to 320,246.60, 479,994.68 and 130,588.58 is: 195,729.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,246.60 : 479,994.68 = 130,588.58 : x
  2. Step 2: Convert to fraction form
    320,246.60/479,994.68 = 130,588.58/x
  3. Step 3: Cross multiply
    320,246.60x = 479,994.68 × 130,588.58
  4. Step 4: Simplify right side
    320,246.60x = 62,681,823,668.75
  5. Step 5: Solve for x
    x = 62,681,823,668.75/320,246.60
  6. Step 6: Final answer
    x = 195,729.86

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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.