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Finding the Fourth Proportional to 314,718.68, 434,306.30 and 171,479.90

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Solution

The fourth proportional to 314,718.68, 434,306.30 and 171,479.90 is: 236,639.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,718.68 : 434,306.30 = 171,479.90 : x
  2. Step 2: Convert to fraction form
    314,718.68/434,306.30 = 171,479.90/x
  3. Step 3: Cross multiply
    314,718.68x = 434,306.30 × 171,479.90
  4. Step 4: Simplify right side
    314,718.68x = 74,474,800,893.37
  5. Step 5: Solve for x
    x = 74,474,800,893.37/314,718.68
  6. Step 6: Final answer
    x = 236,639.28

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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.