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Finding the Fourth Proportional to 315,626.55, 473,441.64 and 105,263.88

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Solution

The fourth proportional to 315,626.55, 473,441.64 and 105,263.88 is: 157,896.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,626.55 : 473,441.64 = 105,263.88 : x
  2. Step 2: Convert to fraction form
    315,626.55/473,441.64 = 105,263.88/x
  3. Step 3: Cross multiply
    315,626.55x = 473,441.64 × 105,263.88
  4. Step 4: Simplify right side
    315,626.55x = 49,836,303,979.96
  5. Step 5: Solve for x
    x = 49,836,303,979.96/315,626.55
  6. Step 6: Final answer
    x = 157,896.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.