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Finding the Fourth Proportional to 320,814.60, 480,185.10 and 250,312.20

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Solution

The fourth proportional to 320,814.60, 480,185.10 and 250,312.20 is: 374,659.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,814.60 : 480,185.10 = 250,312.20 : x
  2. Step 2: Convert to fraction form
    320,814.60/480,185.10 = 250,312.20/x
  3. Step 3: Cross multiply
    320,814.60x = 480,185.10 × 250,312.20
  4. Step 4: Simplify right side
    320,814.60x = 120,196,188,788.22
  5. Step 5: Solve for x
    x = 120,196,188,788.22/320,814.60
  6. Step 6: Final answer
    x = 374,659.35

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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.