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Finding the Fourth Proportional to 346,585.20, 520,072.20 and 146,871.60

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Solution

The fourth proportional to 346,585.20, 520,072.20 and 146,871.60 is: 220,389.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,585.20 : 520,072.20 = 146,871.60 : x
  2. Step 2: Convert to fraction form
    346,585.20/520,072.20 = 146,871.60/x
  3. Step 3: Cross multiply
    346,585.20x = 520,072.20 × 146,871.60
  4. Step 4: Simplify right side
    346,585.20x = 76,383,836,129.52
  5. Step 5: Solve for x
    x = 76,383,836,129.52/346,585.20
  6. Step 6: Final answer
    x = 220,389.78

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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.