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Finding the Fourth Proportional to 516,900.15, 775,032.71 and 200,988.81

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Solution

The fourth proportional to 516,900.15, 775,032.71 and 200,988.81 is: 301,359.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,900.15 : 775,032.71 = 200,988.81 : x
  2. Step 2: Convert to fraction form
    516,900.15/775,032.71 = 200,988.81/x
  3. Step 3: Cross multiply
    516,900.15x = 775,032.71 × 200,988.81
  4. Step 4: Simplify right side
    516,900.15x = 155,772,901,089.03
  5. Step 5: Solve for x
    x = 155,772,901,089.03/516,900.15
  6. Step 6: Final answer
    x = 301,359.75

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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.