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Finding the Fourth Proportional to 202,920.15, 280,038.06 and 112,274.64

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Solution

The fourth proportional to 202,920.15, 280,038.06 and 112,274.64 is: 154,943.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,920.15 : 280,038.06 = 112,274.64 : x
  2. Step 2: Convert to fraction form
    202,920.15/280,038.06 = 112,274.64/x
  3. Step 3: Cross multiply
    202,920.15x = 280,038.06 × 112,274.64
  4. Step 4: Simplify right side
    202,920.15x = 31,441,172,372.80
  5. Step 5: Solve for x
    x = 31,441,172,372.80/202,920.15
  6. Step 6: Final answer
    x = 154,943.57

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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.