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Finding the Fourth Proportional to 276,871.60, 415,048.20 and 216,866.80

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Solution

The fourth proportional to 276,871.60, 415,048.20 and 216,866.80 is: 325,097.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,871.60 : 415,048.20 = 216,866.80 : x
  2. Step 2: Convert to fraction form
    276,871.60/415,048.20 = 216,866.80/x
  3. Step 3: Cross multiply
    276,871.60x = 415,048.20 × 216,866.80
  4. Step 4: Simplify right side
    276,871.60x = 90,010,174,979.76
  5. Step 5: Solve for x
    x = 90,010,174,979.76/276,871.60
  6. Step 6: Final answer
    x = 325,097.17

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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.