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Finding the Fourth Proportional to 312,155.57, 430,775.83 and 168,915.62

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Solution

The fourth proportional to 312,155.57, 430,775.83 and 168,915.62 is: 233,104.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,155.57 : 430,775.83 = 168,915.62 : x
  2. Step 2: Convert to fraction form
    312,155.57/430,775.83 = 168,915.62/x
  3. Step 3: Cross multiply
    312,155.57x = 430,775.83 × 168,915.62
  4. Step 4: Simplify right side
    312,155.57x = 72,764,767,060.12
  5. Step 5: Solve for x
    x = 72,764,767,060.12/312,155.57
  6. Step 6: Final answer
    x = 233,104.17

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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.