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Finding the Fourth Proportional to 172,899, 259,348.50 and 48,240

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Solution

The fourth proportional to 172,899, 259,348.50 and 48,240 is: 72,360

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,899 : 259,348.50 = 48,240 : x
  2. Step 2: Convert to fraction form
    172,899/259,348.50 = 48,240/x
  3. Step 3: Cross multiply
    172,899x = 259,348.50 × 48,240
  4. Step 4: Simplify right side
    172,899x = 12,510,971,640
  5. Step 5: Solve for x
    x = 12,510,971,640/172,899
  6. Step 6: Final answer
    x = 72,360

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.