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Finding the Fourth Proportional to 284,983.80, 427,475.70 and 272,849.40

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Solution

The fourth proportional to 284,983.80, 427,475.70 and 272,849.40 is: 409,274.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,983.80 : 427,475.70 = 272,849.40 : x
  2. Step 2: Convert to fraction form
    284,983.80/427,475.70 = 272,849.40/x
  3. Step 3: Cross multiply
    284,983.80x = 427,475.70 × 272,849.40
  4. Step 4: Simplify right side
    284,983.80x = 116,636,488,259.58
  5. Step 5: Solve for x
    x = 116,636,488,259.58/284,983.80
  6. Step 6: Final answer
    x = 409,274.10

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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.