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Finding the Fourth Proportional to 443,437.68, 665,154.60 and 111,012.72

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Solution

The fourth proportional to 443,437.68, 665,154.60 and 111,012.72 is: 166,518.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,437.68 : 665,154.60 = 111,012.72 : x
  2. Step 2: Convert to fraction form
    443,437.68/665,154.60 = 111,012.72/x
  3. Step 3: Cross multiply
    443,437.68x = 665,154.60 × 111,012.72
  4. Step 4: Simplify right side
    443,437.68x = 73,840,621,366.51
  5. Step 5: Solve for x
    x = 73,840,621,366.51/443,437.68
  6. Step 6: Final answer
    x = 166,518.60

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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.