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Finding the Fourth Proportional to 345,725, 518,587.50 and 112,253

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Solution

The fourth proportional to 345,725, 518,587.50 and 112,253 is: 168,379.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,725 : 518,587.50 = 112,253 : x
  2. Step 2: Convert to fraction form
    345,725/518,587.50 = 112,253/x
  3. Step 3: Cross multiply
    345,725x = 518,587.50 × 112,253
  4. Step 4: Simplify right side
    345,725x = 58,213,002,637.50
  5. Step 5: Solve for x
    x = 58,213,002,637.50/345,725
  6. Step 6: Final answer
    x = 168,379.50

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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.