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Finding the Fourth Proportional to 406,014.84, 609,063.21 and 139,740.30

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Solution

The fourth proportional to 406,014.84, 609,063.21 and 139,740.30 is: 209,624.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,014.84 : 609,063.21 = 139,740.30 : x
  2. Step 2: Convert to fraction form
    406,014.84/609,063.21 = 139,740.30/x
  3. Step 3: Cross multiply
    406,014.84x = 609,063.21 × 139,740.30
  4. Step 4: Simplify right side
    406,014.84x = 85,110,675,684.36
  5. Step 5: Solve for x
    x = 85,110,675,684.36/406,014.84
  6. Step 6: Final answer
    x = 209,624.54

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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.