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Finding the Fourth Proportional to 313,639.72, 432,844.22 and 177,674.78

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Solution

The fourth proportional to 313,639.72, 432,844.22 and 177,674.78 is: 245,203.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,639.72 : 432,844.22 = 177,674.78 : x
  2. Step 2: Convert to fraction form
    313,639.72/432,844.22 = 177,674.78/x
  3. Step 3: Cross multiply
    313,639.72x = 432,844.22 × 177,674.78
  4. Step 4: Simplify right side
    313,639.72x = 76,905,501,562.77
  5. Step 5: Solve for x
    x = 76,905,501,562.77/313,639.72
  6. Step 6: Final answer
    x = 245,203.32

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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.