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Finding the Fourth Proportional to 315,008.76, 434,706.42 and 171,765.72

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Solution

The fourth proportional to 315,008.76, 434,706.42 and 171,765.72 is: 237,033.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,008.76 : 434,706.42 = 171,765.72 : x
  2. Step 2: Convert to fraction form
    315,008.76/434,706.42 = 171,765.72/x
  3. Step 3: Cross multiply
    315,008.76x = 434,706.42 × 171,765.72
  4. Step 4: Simplify right side
    315,008.76x = 74,667,661,219.92
  5. Step 5: Solve for x
    x = 74,667,661,219.92/315,008.76
  6. Step 6: Final answer
    x = 237,033.60

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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.