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Finding the Fourth Proportional to 259,715.80, 389,573.70 and 148,816.60

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Solution

The fourth proportional to 259,715.80, 389,573.70 and 148,816.60 is: 223,224.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,715.80 : 389,573.70 = 148,816.60 : x
  2. Step 2: Convert to fraction form
    259,715.80/389,573.70 = 148,816.60/x
  3. Step 3: Cross multiply
    259,715.80x = 389,573.70 × 148,816.60
  4. Step 4: Simplify right side
    259,715.80x = 57,975,033,483.42
  5. Step 5: Solve for x
    x = 57,975,033,483.42/259,715.80
  6. Step 6: Final answer
    x = 223,224.90

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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.