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Finding the Fourth Proportional to 260,111.70, 389,511.45 and 207,623.70

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Solution

The fourth proportional to 260,111.70, 389,511.45 and 207,623.70 is: 310,911.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,111.70 : 389,511.45 = 207,623.70 : x
  2. Step 2: Convert to fraction form
    260,111.70/389,511.45 = 207,623.70/x
  3. Step 3: Cross multiply
    260,111.70x = 389,511.45 × 207,623.70
  4. Step 4: Simplify right side
    260,111.70x = 80,871,808,441.37
  5. Step 5: Solve for x
    x = 80,871,808,441.37/260,111.70
  6. Step 6: Final answer
    x = 310,911.84

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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.