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Finding the Fourth Proportional to 587,177.81, 810,309.53 and 318,905.81

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Solution

The fourth proportional to 587,177.81, 810,309.53 and 318,905.81 is: 440,092.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,177.81 : 810,309.53 = 318,905.81 : x
  2. Step 2: Convert to fraction form
    587,177.81/810,309.53 = 318,905.81/x
  3. Step 3: Cross multiply
    587,177.81x = 810,309.53 × 318,905.81
  4. Step 4: Simplify right side
    587,177.81x = 258,412,417,015.37
  5. Step 5: Solve for x
    x = 258,412,417,015.37/587,177.81
  6. Step 6: Final answer
    x = 440,092.27

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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.