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Finding the Fourth Proportional to 356,633.95, 491,867.87 and 313,521.26

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Solution

The fourth proportional to 356,633.95, 491,867.87 and 313,521.26 is: 432,407.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,633.95 : 491,867.87 = 313,521.26 : x
  2. Step 2: Convert to fraction form
    356,633.95/491,867.87 = 313,521.26/x
  3. Step 3: Cross multiply
    356,633.95x = 491,867.87 × 313,521.26
  4. Step 4: Simplify right side
    356,633.95x = 154,211,032,788.31
  5. Step 5: Solve for x
    x = 154,211,032,788.31/356,633.95
  6. Step 6: Final answer
    x = 432,407.05

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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.