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Finding the Fourth Proportional to 509,273.55, 763,989.57 and 154,203.03

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Solution

The fourth proportional to 509,273.55, 763,989.57 and 154,203.03 is: 231,328.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,273.55 : 763,989.57 = 154,203.03 : x
  2. Step 2: Convert to fraction form
    509,273.55/763,989.57 = 154,203.03/x
  3. Step 3: Cross multiply
    509,273.55x = 763,989.57 × 154,203.03
  4. Step 4: Simplify right side
    509,273.55x = 117,809,506,582.40
  5. Step 5: Solve for x
    x = 117,809,506,582.40/509,273.55
  6. Step 6: Final answer
    x = 231,328.54

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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.