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Finding the Fourth Proportional to 304,827.80, 457,241.70 and 138,615.80

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Solution

The fourth proportional to 304,827.80, 457,241.70 and 138,615.80 is: 207,923.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,827.80 : 457,241.70 = 138,615.80 : x
  2. Step 2: Convert to fraction form
    304,827.80/457,241.70 = 138,615.80/x
  3. Step 3: Cross multiply
    304,827.80x = 457,241.70 × 138,615.80
  4. Step 4: Simplify right side
    304,827.80x = 63,380,924,038.86
  5. Step 5: Solve for x
    x = 63,380,924,038.86/304,827.80
  6. Step 6: Final answer
    x = 207,923.70

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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.