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Finding the Fourth Proportional to 261,002.80, 392,087.40 and 254,004.40

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Solution

The fourth proportional to 261,002.80, 392,087.40 and 254,004.40 is: 381,574.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,002.80 : 392,087.40 = 254,004.40 : x
  2. Step 2: Convert to fraction form
    261,002.80/392,087.40 = 254,004.40/x
  3. Step 3: Cross multiply
    261,002.80x = 392,087.40 × 254,004.40
  4. Step 4: Simplify right side
    261,002.80x = 99,591,924,784.56
  5. Step 5: Solve for x
    x = 99,591,924,784.56/261,002.80
  6. Step 6: Final answer
    x = 381,574.16

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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.