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Finding the Fourth Proportional to 207,015.70, 310,705.80 and 122,670.40

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Solution

The fourth proportional to 207,015.70, 310,705.80 and 122,670.40 is: 184,113.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,015.70 : 310,705.80 = 122,670.40 : x
  2. Step 2: Convert to fraction form
    207,015.70/310,705.80 = 122,670.40/x
  3. Step 3: Cross multiply
    207,015.70x = 310,705.80 × 122,670.40
  4. Step 4: Simplify right side
    207,015.70x = 38,114,404,768.32
  5. Step 5: Solve for x
    x = 38,114,404,768.32/207,015.70
  6. Step 6: Final answer
    x = 184,113.60

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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.