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Finding the Fourth Proportional to 499,986.70, 749,907.15 and 144,963.70

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Solution

The fourth proportional to 499,986.70, 749,907.15 and 144,963.70 is: 217,424.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,986.70 : 749,907.15 = 144,963.70 : x
  2. Step 2: Convert to fraction form
    499,986.70/749,907.15 = 144,963.70/x
  3. Step 3: Cross multiply
    499,986.70x = 749,907.15 × 144,963.70
  4. Step 4: Simplify right side
    499,986.70x = 108,709,315,120.46
  5. Step 5: Solve for x
    x = 108,709,315,120.46/499,986.70
  6. Step 6: Final answer
    x = 217,424.41

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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.