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Finding the Fourth Proportional to 275,938.60, 413,907.90 and 254,943.40

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Solution

The fourth proportional to 275,938.60, 413,907.90 and 254,943.40 is: 382,415.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,938.60 : 413,907.90 = 254,943.40 : x
  2. Step 2: Convert to fraction form
    275,938.60/413,907.90 = 254,943.40/x
  3. Step 3: Cross multiply
    275,938.60x = 413,907.90 × 254,943.40
  4. Step 4: Simplify right side
    275,938.60x = 105,523,087,312.86
  5. Step 5: Solve for x
    x = 105,523,087,312.86/275,938.60
  6. Step 6: Final answer
    x = 382,415.10

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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.