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Finding the Fourth Proportional to 262,097.70, 393,438.15 and 143,999.70

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Solution

The fourth proportional to 262,097.70, 393,438.15 and 143,999.70 is: 216,159.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,097.70 : 393,438.15 = 143,999.70 : x
  2. Step 2: Convert to fraction form
    262,097.70/393,438.15 = 143,999.70/x
  3. Step 3: Cross multiply
    262,097.70x = 393,438.15 × 143,999.70
  4. Step 4: Simplify right side
    262,097.70x = 56,654,975,568.56
  5. Step 5: Solve for x
    x = 56,654,975,568.56/262,097.70
  6. Step 6: Final answer
    x = 216,159.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.