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Finding the Fourth Proportional to 314,855.87, 434,505.48 and 171,615.65

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Solution

The fourth proportional to 314,855.87, 434,505.48 and 171,615.65 is: 236,831.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,855.87 : 434,505.48 = 171,615.65 : x
  2. Step 2: Convert to fraction form
    314,855.87/434,505.48 = 171,615.65/x
  3. Step 3: Cross multiply
    314,855.87x = 434,505.48 × 171,615.65
  4. Step 4: Simplify right side
    314,855.87x = 74,567,940,378.76
  5. Step 5: Solve for x
    x = 74,567,940,378.76/314,855.87
  6. Step 6: Final answer
    x = 236,831.98

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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.