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Finding the Fourth Proportional to 443,856.40, 665,784.60 and 302,138.80

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Solution

The fourth proportional to 443,856.40, 665,784.60 and 302,138.80 is: 453,208.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,856.40 : 665,784.60 = 302,138.80 : x
  2. Step 2: Convert to fraction form
    443,856.40/665,784.60 = 302,138.80/x
  3. Step 3: Cross multiply
    443,856.40x = 665,784.60 × 302,138.80
  4. Step 4: Simplify right side
    443,856.40x = 201,159,360,102.48
  5. Step 5: Solve for x
    x = 201,159,360,102.48/443,856.40
  6. Step 6: Final answer
    x = 453,208.20

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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.