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Finding the Fourth Proportional to 384,751.20, 577,418.40 and 251,587.20

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Solution

The fourth proportional to 384,751.20, 577,418.40 and 251,587.20 is: 377,571.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,751.20 : 577,418.40 = 251,587.20 : x
  2. Step 2: Convert to fraction form
    384,751.20/577,418.40 = 251,587.20/x
  3. Step 3: Cross multiply
    384,751.20x = 577,418.40 × 251,587.20
  4. Step 4: Simplify right side
    384,751.20x = 145,271,078,484.48
  5. Step 5: Solve for x
    x = 145,271,078,484.48/384,751.20
  6. Step 6: Final answer
    x = 377,571.48

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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.