Home / 639,176.45-958,090.64-212,598.36

Finding the Fourth Proportional to 639,176.45, 958,090.64 and 212,598.36

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Solution

The fourth proportional to 639,176.45, 958,090.64 and 212,598.36 is: 318,673.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,176.45 : 958,090.64 = 212,598.36 : x
  2. Step 2: Convert to fraction form
    639,176.45/958,090.64 = 212,598.36/x
  3. Step 3: Cross multiply
    639,176.45x = 958,090.64 × 212,598.36
  4. Step 4: Simplify right side
    639,176.45x = 203,688,497,732.36
  5. Step 5: Solve for x
    x = 203,688,497,732.36/639,176.45
  6. Step 6: Final answer
    x = 318,673.35

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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.