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Finding the Fourth Proportional to 311,938.89, 430,474.66 and 168,698.89

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Solution

The fourth proportional to 311,938.89, 430,474.66 and 168,698.89 is: 232,803.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,938.89 : 430,474.66 = 168,698.89 : x
  2. Step 2: Convert to fraction form
    311,938.89/430,474.66 = 168,698.89/x
  3. Step 3: Cross multiply
    311,938.89x = 430,474.66 × 168,698.89
  4. Step 4: Simplify right side
    311,938.89x = 72,620,597,315.13
  5. Step 5: Solve for x
    x = 72,620,597,315.13/311,938.89
  6. Step 6: Final answer
    x = 232,803.92

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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.