Home / 257,578.36-355,424.28-142,855.64

Finding the Fourth Proportional to 257,578.36, 355,424.28 and 142,855.64

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Solution

The fourth proportional to 257,578.36, 355,424.28 and 142,855.64 is: 197,122.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,578.36 : 355,424.28 = 142,855.64 : x
  2. Step 2: Convert to fraction form
    257,578.36/355,424.28 = 142,855.64/x
  3. Step 3: Cross multiply
    257,578.36x = 355,424.28 × 142,855.64
  4. Step 4: Simplify right side
    257,578.36x = 50,774,362,990.94
  5. Step 5: Solve for x
    x = 50,774,362,990.94/257,578.36
  6. Step 6: Final answer
    x = 197,122.01

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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.