Home / 385,067.81-531,230.86-257,784.41

Finding the Fourth Proportional to 385,067.81, 531,230.86 and 257,784.41

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Solution

The fourth proportional to 385,067.81, 531,230.86 and 257,784.41 is: 355,633.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,067.81 : 531,230.86 = 257,784.41 : x
  2. Step 2: Convert to fraction form
    385,067.81/531,230.86 = 257,784.41/x
  3. Step 3: Cross multiply
    385,067.81x = 531,230.86 × 257,784.41
  4. Step 4: Simplify right side
    385,067.81x = 136,943,033,818.89
  5. Step 5: Solve for x
    x = 136,943,033,818.89/385,067.81
  6. Step 6: Final answer
    x = 355,633.55

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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.