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Finding the Fourth Proportional to 276,615.40, 414,923.10 and 171,639.40

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Solution

The fourth proportional to 276,615.40, 414,923.10 and 171,639.40 is: 257,459.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,615.40 : 414,923.10 = 171,639.40 : x
  2. Step 2: Convert to fraction form
    276,615.40/414,923.10 = 171,639.40/x
  3. Step 3: Cross multiply
    276,615.40x = 414,923.10 × 171,639.40
  4. Step 4: Simplify right side
    276,615.40x = 71,217,151,930.14
  5. Step 5: Solve for x
    x = 71,217,151,930.14/276,615.40
  6. Step 6: Final answer
    x = 257,459.10

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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.