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Finding the Fourth Proportional to 406,127.90, 609,249.45 and 125,615.90

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Solution

The fourth proportional to 406,127.90, 609,249.45 and 125,615.90 is: 188,441.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,127.90 : 609,249.45 = 125,615.90 : x
  2. Step 2: Convert to fraction form
    406,127.90/609,249.45 = 125,615.90/x
  3. Step 3: Cross multiply
    406,127.90x = 609,249.45 × 125,615.90
  4. Step 4: Simplify right side
    406,127.90x = 76,531,417,986.26
  5. Step 5: Solve for x
    x = 76,531,417,986.26/406,127.90
  6. Step 6: Final answer
    x = 188,441.67

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1.5x scale

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.