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Finding the Fourth Proportional to 499,756.80, 689,670.72 and 273,406.08

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Solution

The fourth proportional to 499,756.80, 689,670.72 and 273,406.08 is: 377,303.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,756.80 : 689,670.72 = 273,406.08 : x
  2. Step 2: Convert to fraction form
    499,756.80/689,670.72 = 273,406.08/x
  3. Step 3: Cross multiply
    499,756.80x = 689,670.72 × 273,406.08
  4. Step 4: Simplify right side
    499,756.80x = 188,560,168,045.98
  5. Step 5: Solve for x
    x = 188,560,168,045.98/499,756.80
  6. Step 6: Final answer
    x = 377,303.86

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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.