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Finding the Fourth Proportional to 418,859.88, 578,145.48 and 246,877.80

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Solution

The fourth proportional to 418,859.88, 578,145.48 and 246,877.80 is: 340,761.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,859.88 : 578,145.48 = 246,877.80 : x
  2. Step 2: Convert to fraction form
    418,859.88/578,145.48 = 246,877.80/x
  3. Step 3: Cross multiply
    418,859.88x = 578,145.48 × 246,877.80
  4. Step 4: Simplify right side
    418,859.88x = 142,731,284,182.34
  5. Step 5: Solve for x
    x = 142,731,284,182.34/418,859.88
  6. Step 6: Final answer
    x = 340,761.41

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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.