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Finding the Fourth Proportional to 312,304.53, 430,981.63 and 169,064.57

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Solution

The fourth proportional to 312,304.53, 430,981.63 and 169,064.57 is: 233,309.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,304.53 : 430,981.63 = 169,064.57 : x
  2. Step 2: Convert to fraction form
    312,304.53/430,981.63 = 169,064.57/x
  3. Step 3: Cross multiply
    312,304.53x = 430,981.63 × 169,064.57
  4. Step 4: Simplify right side
    312,304.53x = 72,863,724,608.64
  5. Step 5: Solve for x
    x = 72,863,724,608.64/312,304.53
  6. Step 6: Final answer
    x = 233,309.85

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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.