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Finding the Fourth Proportional to 315,855.90, 435,881.20 and 179,902.51

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Solution

The fourth proportional to 315,855.90, 435,881.20 and 179,902.51 is: 248,265.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,855.90 : 435,881.20 = 179,902.51 : x
  2. Step 2: Convert to fraction form
    315,855.90/435,881.20 = 179,902.51/x
  3. Step 3: Cross multiply
    315,855.90x = 435,881.20 × 179,902.51
  4. Step 4: Simplify right side
    315,855.90x = 78,416,122,036.91
  5. Step 5: Solve for x
    x = 78,416,122,036.91/315,855.90
  6. Step 6: Final answer
    x = 248,265.49

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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.