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Finding the Fourth Proportional to 315,124.76, 434,878.04 and 171,889.94

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Solution

The fourth proportional to 315,124.76, 434,878.04 and 171,889.94 is: 237,211.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,124.76 : 434,878.04 = 171,889.94 : x
  2. Step 2: Convert to fraction form
    315,124.76/434,878.04 = 171,889.94/x
  3. Step 3: Cross multiply
    315,124.76x = 434,878.04 × 171,889.94
  4. Step 4: Simplify right side
    315,124.76x = 74,751,160,202.92
  5. Step 5: Solve for x
    x = 74,751,160,202.92/315,124.76
  6. Step 6: Final answer
    x = 237,211.32

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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.