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Finding the Fourth Proportional to 258,087.30, 387,130.95 and 254,150.70

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Solution

The fourth proportional to 258,087.30, 387,130.95 and 254,150.70 is: 381,226.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,087.30 : 387,130.95 = 254,150.70 : x
  2. Step 2: Convert to fraction form
    258,087.30/387,130.95 = 254,150.70/x
  3. Step 3: Cross multiply
    258,087.30x = 387,130.95 × 254,150.70
  4. Step 4: Simplify right side
    258,087.30x = 98,389,601,934.17
  5. Step 5: Solve for x
    x = 98,389,601,934.17/258,087.30
  6. Step 6: Final answer
    x = 381,226.05

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1.5x scale

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.