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Finding the Fourth Proportional to 251,018.72, 346,407.72 and 143,582.12

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Solution

The fourth proportional to 251,018.72, 346,407.72 and 143,582.12 is: 198,144.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,018.72 : 346,407.72 = 143,582.12 : x
  2. Step 2: Convert to fraction form
    251,018.72/346,407.72 = 143,582.12/x
  3. Step 3: Cross multiply
    251,018.72x = 346,407.72 × 143,582.12
  4. Step 4: Simplify right side
    251,018.72x = 49,737,954,821.97
  5. Step 5: Solve for x
    x = 49,737,954,821.97/251,018.72
  6. Step 6: Final answer
    x = 198,144.40

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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.