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Finding the Fourth Proportional to 207,012.70, 310,701.30 and 122,667.40

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Solution

The fourth proportional to 207,012.70, 310,701.30 and 122,667.40 is: 184,109.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,012.70 : 310,701.30 = 122,667.40 : x
  2. Step 2: Convert to fraction form
    207,012.70/310,701.30 = 122,667.40/x
  3. Step 3: Cross multiply
    207,012.70x = 310,701.30 × 122,667.40
  4. Step 4: Simplify right side
    207,012.70x = 38,112,920,647.62
  5. Step 5: Solve for x
    x = 38,112,920,647.62/207,012.70
  6. Step 6: Final answer
    x = 184,109.09

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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.