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Finding the Fourth Proportional to 256,682.72, 382,465.72 and 228,749.60

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Solution

The fourth proportional to 256,682.72, 382,465.72 and 228,749.60 is: 340,844.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,682.72 : 382,465.72 = 228,749.60 : x
  2. Step 2: Convert to fraction form
    256,682.72/382,465.72 = 228,749.60/x
  3. Step 3: Cross multiply
    256,682.72x = 382,465.72 × 228,749.60
  4. Step 4: Simplify right side
    256,682.72x = 87,488,880,463.71
  5. Step 5: Solve for x
    x = 87,488,880,463.71/256,682.72
  6. Step 6: Final answer
    x = 340,844.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.