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Finding the Fourth Proportional to 631,172.16, 871,012.98 and 344,692.16

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Solution

The fourth proportional to 631,172.16, 871,012.98 and 344,692.16 is: 475,672.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,172.16 : 871,012.98 = 344,692.16 : x
  2. Step 2: Convert to fraction form
    631,172.16/871,012.98 = 344,692.16/x
  3. Step 3: Cross multiply
    631,172.16x = 871,012.98 × 344,692.16
  4. Step 4: Simplify right side
    631,172.16x = 300,231,345,464.24
  5. Step 5: Solve for x
    x = 300,231,345,464.24/631,172.16
  6. Step 6: Final answer
    x = 475,672.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.