Home / 208,325.16-312,493.50-129,666.60

Finding the Fourth Proportional to 208,325.16, 312,493.50 and 129,666.60

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Solution

The fourth proportional to 208,325.16, 312,493.50 and 129,666.60 is: 194,503.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,325.16 : 312,493.50 = 129,666.60 : x
  2. Step 2: Convert to fraction form
    208,325.16/312,493.50 = 129,666.60/x
  3. Step 3: Cross multiply
    208,325.16x = 312,493.50 × 129,666.60
  4. Step 4: Simplify right side
    208,325.16x = 40,519,969,667.10
  5. Step 5: Solve for x
    x = 40,519,969,667.10/208,325.16
  6. Step 6: Final answer
    x = 194,503.49

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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.