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Finding the Fourth Proportional to 486,096.77, 671,065.76 and 355,127.54

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Solution

The fourth proportional to 486,096.77, 671,065.76 and 355,127.54 is: 490,260.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,096.77 : 671,065.76 = 355,127.54 : x
  2. Step 2: Convert to fraction form
    486,096.77/671,065.76 = 355,127.54/x
  3. Step 3: Cross multiply
    486,096.77x = 671,065.76 × 355,127.54
  4. Step 4: Simplify right side
    486,096.77x = 238,313,932,527.03
  5. Step 5: Solve for x
    x = 238,313,932,527.03/486,096.77
  6. Step 6: Final answer
    x = 490,260.27

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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.