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Finding the Fourth Proportional to 315,596.86, 435,504.54 and 172,327.84

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Solution

The fourth proportional to 315,596.86, 435,504.54 and 172,327.84 is: 237,801.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,596.86 : 435,504.54 = 172,327.84 : x
  2. Step 2: Convert to fraction form
    315,596.86/435,504.54 = 172,327.84/x
  3. Step 3: Cross multiply
    315,596.86x = 435,504.54 × 172,327.84
  4. Step 4: Simplify right side
    315,596.86x = 75,049,556,688.39
  5. Step 5: Solve for x
    x = 75,049,556,688.39/315,596.86
  6. Step 6: Final answer
    x = 237,801.98

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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.