Home / 257,208.54-355,040.94-209,378.82

Finding the Fourth Proportional to 257,208.54, 355,040.94 and 209,378.82

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Solution

The fourth proportional to 257,208.54, 355,040.94 and 209,378.82 is: 289,018.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,208.54 : 355,040.94 = 209,378.82 : x
  2. Step 2: Convert to fraction form
    257,208.54/355,040.94 = 209,378.82/x
  3. Step 3: Cross multiply
    257,208.54x = 355,040.94 × 209,378.82
  4. Step 4: Simplify right side
    257,208.54x = 74,338,053,068.89
  5. Step 5: Solve for x
    x = 74,338,053,068.89/257,208.54
  6. Step 6: Final answer
    x = 289,018.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.