Home / 256,139.51-353,143.87-210,029.24

Finding the Fourth Proportional to 256,139.51, 353,143.87 and 210,029.24

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Solution

The fourth proportional to 256,139.51, 353,143.87 and 210,029.24 is: 289,570.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,139.51 : 353,143.87 = 210,029.24 : x
  2. Step 2: Convert to fraction form
    256,139.51/353,143.87 = 210,029.24/x
  3. Step 3: Cross multiply
    256,139.51x = 353,143.87 × 210,029.24
  4. Step 4: Simplify right side
    256,139.51x = 74,170,538,984.55
  5. Step 5: Solve for x
    x = 74,170,538,984.55/256,139.51
  6. Step 6: Final answer
    x = 289,570.87

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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.