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Finding the Fourth Proportional to 243,578.25, 336,114.90 and 136,145.82

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Solution

The fourth proportional to 243,578.25, 336,114.90 and 136,145.82 is: 187,868.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,578.25 : 336,114.90 = 136,145.82 : x
  2. Step 2: Convert to fraction form
    243,578.25/336,114.90 = 136,145.82/x
  3. Step 3: Cross multiply
    243,578.25x = 336,114.90 × 136,145.82
  4. Step 4: Simplify right side
    243,578.25x = 45,760,638,674.72
  5. Step 5: Solve for x
    x = 45,760,638,674.72/243,578.25
  6. Step 6: Final answer
    x = 187,868.33

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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.