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Finding the Fourth Proportional to 499,016.35, 748,571.67 and 139,211.11

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Solution

The fourth proportional to 499,016.35, 748,571.67 and 139,211.11 is: 208,829.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,016.35 : 748,571.67 = 139,211.11 : x
  2. Step 2: Convert to fraction form
    499,016.35/748,571.67 = 139,211.11/x
  3. Step 3: Cross multiply
    499,016.35x = 748,571.67 × 139,211.11
  4. Step 4: Simplify right side
    499,016.35x = 104,209,493,095.25
  5. Step 5: Solve for x
    x = 104,209,493,095.25/499,016.35
  6. Step 6: Final answer
    x = 208,829.82

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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.