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Finding the Fourth Proportional to 315,071.57, 434,793.52 and 171,823.07

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Solution

The fourth proportional to 315,071.57, 434,793.52 and 171,823.07 is: 237,112.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,071.57 : 434,793.52 = 171,823.07 : x
  2. Step 2: Convert to fraction form
    315,071.57/434,793.52 = 171,823.07/x
  3. Step 3: Cross multiply
    315,071.57x = 434,793.52 × 171,823.07
  4. Step 4: Simplify right side
    315,071.57x = 74,707,558,724.27
  5. Step 5: Solve for x
    x = 74,707,558,724.27/315,071.57
  6. Step 6: Final answer
    x = 237,112.98

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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.