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Finding the Fourth Proportional to 418,153.20, 577,100.88 and 248,388

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Solution

The fourth proportional to 418,153.20, 577,100.88 and 248,388 is: 342,804.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,153.20 : 577,100.88 = 248,388 : x
  2. Step 2: Convert to fraction form
    418,153.20/577,100.88 = 248,388/x
  3. Step 3: Cross multiply
    418,153.20x = 577,100.88 × 248,388
  4. Step 4: Simplify right side
    418,153.20x = 143,344,933,381.44
  5. Step 5: Solve for x
    x = 143,344,933,381.44/418,153.20
  6. Step 6: Final answer
    x = 342,804.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.