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Finding the Fourth Proportional to 211,060.90, 315,900.15 and 164,059.30

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Solution

The fourth proportional to 211,060.90, 315,900.15 and 164,059.30 is: 245,551.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,060.90 : 315,900.15 = 164,059.30 : x
  2. Step 2: Convert to fraction form
    211,060.90/315,900.15 = 164,059.30/x
  3. Step 3: Cross multiply
    211,060.90x = 315,900.15 × 164,059.30
  4. Step 4: Simplify right side
    211,060.90x = 51,826,357,478.90
  5. Step 5: Solve for x
    x = 51,826,357,478.90/211,060.90
  6. Step 6: Final answer
    x = 245,551.67

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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.