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Finding the Fourth Proportional to 418,758.18, 577,833.84 and 283,087.32

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Solution

The fourth proportional to 418,758.18, 577,833.84 and 283,087.32 is: 390,625.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,758.18 : 577,833.84 = 283,087.32 : x
  2. Step 2: Convert to fraction form
    418,758.18/577,833.84 = 283,087.32/x
  3. Step 3: Cross multiply
    418,758.18x = 577,833.84 × 283,087.32
  4. Step 4: Simplify right side
    418,758.18x = 163,577,433,170.91
  5. Step 5: Solve for x
    x = 163,577,433,170.91/418,758.18
  6. Step 6: Final answer
    x = 390,625.05

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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.