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Finding the Fourth Proportional to 314,624.81, 434,188.94 and 171,384.54

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Solution

The fourth proportional to 314,624.81, 434,188.94 and 171,384.54 is: 236,514.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,624.81 : 434,188.94 = 171,384.54 : x
  2. Step 2: Convert to fraction form
    314,624.81/434,188.94 = 171,384.54/x
  3. Step 3: Cross multiply
    314,624.81x = 434,188.94 × 171,384.54
  4. Step 4: Simplify right side
    314,624.81x = 74,413,270,898.06
  5. Step 5: Solve for x
    x = 74,413,270,898.06/314,624.81
  6. Step 6: Final answer
    x = 236,514.32

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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.