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Finding the Fourth Proportional to 499,668.75, 749,503.24 and 139,892.60

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Solution

The fourth proportional to 499,668.75, 749,503.24 and 139,892.60 is: 209,838.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,668.75 : 749,503.24 = 139,892.60 : x
  2. Step 2: Convert to fraction form
    499,668.75/749,503.24 = 139,892.60/x
  3. Step 3: Cross multiply
    499,668.75x = 749,503.24 × 139,892.60
  4. Step 4: Simplify right side
    499,668.75x = 104,849,954,518.80
  5. Step 5: Solve for x
    x = 104,849,954,518.80/499,668.75
  6. Step 6: Final answer
    x = 209,838.93

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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.