Home / 256,289.92-353,663.04-143,090.56

Finding the Fourth Proportional to 256,289.92, 353,663.04 and 143,090.56

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Solution

The fourth proportional to 256,289.92, 353,663.04 and 143,090.56 is: 197,455.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,289.92 : 353,663.04 = 143,090.56 : x
  2. Step 2: Convert to fraction form
    256,289.92/353,663.04 = 143,090.56/x
  3. Step 3: Cross multiply
    256,289.92x = 353,663.04 × 143,090.56
  4. Step 4: Simplify right side
    256,289.92x = 50,605,842,444.90
  5. Step 5: Solve for x
    x = 50,605,842,444.90/256,289.92
  6. Step 6: Final answer
    x = 197,455.45

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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.