Home / 256,516.08-353,985.40-143,339.76

Finding the Fourth Proportional to 256,516.08, 353,985.40 and 143,339.76

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Solution

The fourth proportional to 256,516.08, 353,985.40 and 143,339.76 is: 197,805.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,516.08 : 353,985.40 = 143,339.76 : x
  2. Step 2: Convert to fraction form
    256,516.08/353,985.40 = 143,339.76/x
  3. Step 3: Cross multiply
    256,516.08x = 353,985.40 × 143,339.76
  4. Step 4: Simplify right side
    256,516.08x = 50,740,182,279.50
  5. Step 5: Solve for x
    x = 50,740,182,279.50/256,516.08
  6. Step 6: Final answer
    x = 197,805.07

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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.