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Finding the Fourth Proportional to 346,506.40, 520,180.80 and 220,146.40

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Solution

The fourth proportional to 346,506.40, 520,180.80 and 220,146.40 is: 330,487.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,506.40 : 520,180.80 = 220,146.40 : x
  2. Step 2: Convert to fraction form
    346,506.40/520,180.80 = 220,146.40/x
  3. Step 3: Cross multiply
    346,506.40x = 520,180.80 × 220,146.40
  4. Step 4: Simplify right side
    346,506.40x = 114,515,930,469.12
  5. Step 5: Solve for x
    x = 114,515,930,469.12/346,506.40
  6. Step 6: Final answer
    x = 330,487.20

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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.