Home / 385,066.97-531,229.69-257,783.57

Finding the Fourth Proportional to 385,066.97, 531,229.69 and 257,783.57

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Solution

The fourth proportional to 385,066.97, 531,229.69 and 257,783.57 is: 355,632.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,066.97 : 531,229.69 = 257,783.57 : x
  2. Step 2: Convert to fraction form
    385,066.97/531,229.69 = 257,783.57/x
  3. Step 3: Cross multiply
    385,066.97x = 531,229.69 × 257,783.57
  4. Step 4: Simplify right side
    385,066.97x = 136,942,282,033.13
  5. Step 5: Solve for x
    x = 136,942,282,033.13/385,066.97
  6. Step 6: Final answer
    x = 355,632.38

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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.