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Finding the Fourth Proportional to 262,308.40, 393,462.60 and 72,768.40

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Solution

The fourth proportional to 262,308.40, 393,462.60 and 72,768.40 is: 109,152.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,308.40 : 393,462.60 = 72,768.40 : x
  2. Step 2: Convert to fraction form
    262,308.40/393,462.60 = 72,768.40/x
  3. Step 3: Cross multiply
    262,308.40x = 393,462.60 × 72,768.40
  4. Step 4: Simplify right side
    262,308.40x = 28,631,643,861.84
  5. Step 5: Solve for x
    x = 28,631,643,861.84/262,308.40
  6. Step 6: Final answer
    x = 109,152.60

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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.