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Finding the Fourth Proportional to 312,046.56, 430,624.35 and 168,806.84

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Solution

The fourth proportional to 312,046.56, 430,624.35 and 168,806.84 is: 232,953.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,046.56 : 430,624.35 = 168,806.84 : x
  2. Step 2: Convert to fraction form
    312,046.56/430,624.35 = 168,806.84/x
  3. Step 3: Cross multiply
    312,046.56x = 430,624.35 × 168,806.84
  4. Step 4: Simplify right side
    312,046.56x = 72,692,333,597.43
  5. Step 5: Solve for x
    x = 72,692,333,597.43/312,046.56
  6. Step 6: Final answer
    x = 232,953.48

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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.