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Finding the Fourth Proportional to 398,793.09, 596,784.45 and 249,103.89

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Solution

The fourth proportional to 398,793.09, 596,784.45 and 249,103.89 is: 372,778.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,793.09 : 596,784.45 = 249,103.89 : x
  2. Step 2: Convert to fraction form
    398,793.09/596,784.45 = 249,103.89/x
  3. Step 3: Cross multiply
    398,793.09x = 596,784.45 × 249,103.89
  4. Step 4: Simplify right side
    398,793.09x = 148,661,327,986.51
  5. Step 5: Solve for x
    x = 148,661,327,986.51/398,793.09
  6. Step 6: Final answer
    x = 372,778.09

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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.