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Finding the Fourth Proportional to 259,278.80, 388,918.20 and 237,117.20

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Solution

The fourth proportional to 259,278.80, 388,918.20 and 237,117.20 is: 355,675.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,278.80 : 388,918.20 = 237,117.20 : x
  2. Step 2: Convert to fraction form
    259,278.80/388,918.20 = 237,117.20/x
  3. Step 3: Cross multiply
    259,278.80x = 388,918.20 × 237,117.20
  4. Step 4: Simplify right side
    259,278.80x = 92,219,194,613.04
  5. Step 5: Solve for x
    x = 92,219,194,613.04/259,278.80
  6. Step 6: Final answer
    x = 355,675.80

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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.