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Finding the Fourth Proportional to 206,554.70, 310,014.30 and 122,209.40

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Solution

The fourth proportional to 206,554.70, 310,014.30 and 122,209.40 is: 183,421.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,554.70 : 310,014.30 = 122,209.40 : x
  2. Step 2: Convert to fraction form
    206,554.70/310,014.30 = 122,209.40/x
  3. Step 3: Cross multiply
    206,554.70x = 310,014.30 × 122,209.40
  4. Step 4: Simplify right side
    206,554.70x = 37,886,661,594.42
  5. Step 5: Solve for x
    x = 37,886,661,594.42/206,554.70
  6. Step 6: Final answer
    x = 183,421.93

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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.