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Finding the Fourth Proportional to 346,716.20, 520,074.30 and 325,980.20

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Solution

The fourth proportional to 346,716.20, 520,074.30 and 325,980.20 is: 488,970.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,716.20 : 520,074.30 = 325,980.20 : x
  2. Step 2: Convert to fraction form
    346,716.20/520,074.30 = 325,980.20/x
  3. Step 3: Cross multiply
    346,716.20x = 520,074.30 × 325,980.20
  4. Step 4: Simplify right side
    346,716.20x = 169,533,924,328.86
  5. Step 5: Solve for x
    x = 169,533,924,328.86/346,716.20
  6. Step 6: Final answer
    x = 488,970.30

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Similar ratio
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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.