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Finding the Fourth Proportional to 259,800.70, 389,701.06 and 207,312.70

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Solution

The fourth proportional to 259,800.70, 389,701.06 and 207,312.70 is: 310,969.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,800.70 : 389,701.06 = 207,312.70 : x
  2. Step 2: Convert to fraction form
    259,800.70/389,701.06 = 207,312.70/x
  3. Step 3: Cross multiply
    259,800.70x = 389,701.06 × 207,312.70
  4. Step 4: Simplify right side
    259,800.70x = 80,789,978,941.46
  5. Step 5: Solve for x
    x = 80,789,978,941.46/259,800.70
  6. Step 6: Final answer
    x = 310,969.06

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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.