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Finding the Fourth Proportional to 499,430.52, 689,216.40 and 273,075.84

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Solution

The fourth proportional to 499,430.52, 689,216.40 and 273,075.84 is: 376,845.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,430.52 : 689,216.40 = 273,075.84 : x
  2. Step 2: Convert to fraction form
    499,430.52/689,216.40 = 273,075.84/x
  3. Step 3: Cross multiply
    499,430.52x = 689,216.40 × 273,075.84
  4. Step 4: Simplify right side
    499,430.52x = 188,208,347,371.78
  5. Step 5: Solve for x
    x = 188,208,347,371.78/499,430.52
  6. Step 6: Final answer
    x = 376,845.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.