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Finding the Fourth Proportional to 346,716.30, 520,074.45 and 199,260.30

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Solution

The fourth proportional to 346,716.30, 520,074.45 and 199,260.30 is: 298,890.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,716.30 : 520,074.45 = 199,260.30 : x
  2. Step 2: Convert to fraction form
    346,716.30/520,074.45 = 199,260.30/x
  3. Step 3: Cross multiply
    346,716.30x = 520,074.45 × 199,260.30
  4. Step 4: Simplify right side
    346,716.30x = 103,630,190,929.34
  5. Step 5: Solve for x
    x = 103,630,190,929.34/346,716.30
  6. Step 6: Final answer
    x = 298,890.45

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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.