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Finding the Fourth Proportional to 493,011.37, 680,355.72 and 266,656.87

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Solution

The fourth proportional to 493,011.37, 680,355.72 and 266,656.87 is: 367,986.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,011.37 : 680,355.72 = 266,656.87 : x
  2. Step 2: Convert to fraction form
    493,011.37/680,355.72 = 266,656.87/x
  3. Step 3: Cross multiply
    493,011.37x = 680,355.72 × 266,656.87
  4. Step 4: Simplify right side
    493,011.37x = 181,421,526,781.80
  5. Step 5: Solve for x
    x = 181,421,526,781.80/493,011.37
  6. Step 6: Final answer
    x = 367,986.50

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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.