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Finding the Fourth Proportional to 346,518.90, 520,199.55 and 220,158.90

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Solution

The fourth proportional to 346,518.90, 520,199.55 and 220,158.90 is: 330,505.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,518.90 : 520,199.55 = 220,158.90 : x
  2. Step 2: Convert to fraction form
    346,518.90/520,199.55 = 220,158.90/x
  3. Step 3: Cross multiply
    346,518.90x = 520,199.55 × 220,158.90
  4. Step 4: Simplify right side
    346,518.90x = 114,526,560,708.50
  5. Step 5: Solve for x
    x = 114,526,560,708.50/346,518.90
  6. Step 6: Final answer
    x = 330,505.96

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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.