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Finding the Fourth Proportional to 228,800.68, 315,719.46 and 133,287.40

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Solution

The fourth proportional to 228,800.68, 315,719.46 and 133,287.40 is: 183,921.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,800.68 : 315,719.46 = 133,287.40 : x
  2. Step 2: Convert to fraction form
    228,800.68/315,719.46 = 133,287.40/x
  3. Step 3: Cross multiply
    228,800.68x = 315,719.46 × 133,287.40
  4. Step 4: Simplify right side
    228,800.68x = 42,081,425,952.80
  5. Step 5: Solve for x
    x = 42,081,425,952.80/228,800.68
  6. Step 6: Final answer
    x = 183,921.77

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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.