Home / 406,436.58-609,669.54-140,205.78

Finding the Fourth Proportional to 406,436.58, 609,669.54 and 140,205.78

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Solution

The fourth proportional to 406,436.58, 609,669.54 and 140,205.78 is: 210,313.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,436.58 : 609,669.54 = 140,205.78 : x
  2. Step 2: Convert to fraction form
    406,436.58/609,669.54 = 140,205.78/x
  3. Step 3: Cross multiply
    406,436.58x = 609,669.54 × 140,205.78
  4. Step 4: Simplify right side
    406,436.58x = 85,479,193,397.94
  5. Step 5: Solve for x
    x = 85,479,193,397.94/406,436.58
  6. Step 6: Final answer
    x = 210,313.73

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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.