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Finding the Fourth Proportional to 259,713.80, 389,570.70 and 148,814.60

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Solution

The fourth proportional to 259,713.80, 389,570.70 and 148,814.60 is: 223,221.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,713.80 : 389,570.70 = 148,814.60 : x
  2. Step 2: Convert to fraction form
    259,713.80/389,570.70 = 148,814.60/x
  3. Step 3: Cross multiply
    259,713.80x = 389,570.70 × 148,814.60
  4. Step 4: Simplify right side
    259,713.80x = 57,973,807,892.22
  5. Step 5: Solve for x
    x = 57,973,807,892.22/259,713.80
  6. Step 6: Final answer
    x = 223,221.90

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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.