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Finding the Fourth Proportional to 398,794.59, 596,786.74 and 249,105.38

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Solution

The fourth proportional to 398,794.59, 596,786.74 and 249,105.38 is: 372,780.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,794.59 : 596,786.74 = 249,105.38 : x
  2. Step 2: Convert to fraction form
    398,794.59/596,786.74 = 249,105.38/x
  3. Step 3: Cross multiply
    398,794.59x = 596,786.74 × 249,105.38
  4. Step 4: Simplify right side
    398,794.59x = 148,662,784,039.96
  5. Step 5: Solve for x
    x = 148,662,784,039.96/398,794.59
  6. Step 6: Final answer
    x = 372,780.34

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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.