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Finding the Fourth Proportional to 443,384.28, 665,692.29 and 308,129.67

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Solution

The fourth proportional to 443,384.28, 665,692.29 and 308,129.67 is: 462,622.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,384.28 : 665,692.29 = 308,129.67 : x
  2. Step 2: Convert to fraction form
    443,384.28/665,692.29 = 308,129.67/x
  3. Step 3: Cross multiply
    443,384.28x = 665,692.29 × 308,129.67
  4. Step 4: Simplify right side
    443,384.28x = 205,119,545,639.24
  5. Step 5: Solve for x
    x = 205,119,545,639.24/443,384.28
  6. Step 6: Final answer
    x = 462,622.50

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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.