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Finding the Fourth Proportional to 312,123.70, 430,727.52 and 168,880.60

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Solution

The fourth proportional to 312,123.70, 430,727.52 and 168,880.60 is: 233,053.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,123.70 : 430,727.52 = 168,880.60 : x
  2. Step 2: Convert to fraction form
    312,123.70/430,727.52 = 168,880.60/x
  3. Step 3: Cross multiply
    312,123.70x = 430,727.52 × 168,880.60
  4. Step 4: Simplify right side
    312,123.70x = 72,741,522,014.11
  5. Step 5: Solve for x
    x = 72,741,522,014.11/312,123.70
  6. Step 6: Final answer
    x = 233,053.50

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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.