Home / 443,889.04-665,865.96-128,347.60

Finding the Fourth Proportional to 443,889.04, 665,865.96 and 128,347.60

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Solution

The fourth proportional to 443,889.04, 665,865.96 and 128,347.60 is: 192,530.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,889.04 : 665,865.96 = 128,347.60 : x
  2. Step 2: Convert to fraction form
    443,889.04/665,865.96 = 128,347.60/x
  3. Step 3: Cross multiply
    443,889.04x = 665,865.96 × 128,347.60
  4. Step 4: Simplify right side
    443,889.04x = 85,462,297,887.70
  5. Step 5: Solve for x
    x = 85,462,297,887.70/443,889.04
  6. Step 6: Final answer
    x = 192,530.77

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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.