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Finding the Fourth Proportional to 406,354.46, 609,571.75 and 140,079.94

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Solution

The fourth proportional to 406,354.46, 609,571.75 and 140,079.94 is: 210,133.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,354.46 : 609,571.75 = 140,079.94 : x
  2. Step 2: Convert to fraction form
    406,354.46/609,571.75 = 140,079.94/x
  3. Step 3: Cross multiply
    406,354.46x = 609,571.75 × 140,079.94
  4. Step 4: Simplify right side
    406,354.46x = 85,388,774,165.70
  5. Step 5: Solve for x
    x = 85,388,774,165.70/406,354.46
  6. Step 6: Final answer
    x = 210,133.72

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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.