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Finding the Fourth Proportional to 309,797.88, 427,521.29 and 173,813.06

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Solution

The fourth proportional to 309,797.88, 427,521.29 and 173,813.06 is: 239,862.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,797.88 : 427,521.29 = 173,813.06 : x
  2. Step 2: Convert to fraction form
    309,797.88/427,521.29 = 173,813.06/x
  3. Step 3: Cross multiply
    309,797.88x = 427,521.29 × 173,813.06
  4. Step 4: Simplify right side
    309,797.88x = 74,308,780,623.38
  5. Step 5: Solve for x
    x = 74,308,780,623.38/309,797.88
  6. Step 6: Final answer
    x = 239,862.13

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1.5x scale

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.