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Finding the Fourth Proportional to 345,564.67, 518,311.95 and 92,812.33

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Solution

The fourth proportional to 345,564.67, 518,311.95 and 92,812.33 is: 139,209.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,564.67 : 518,311.95 = 92,812.33 : x
  2. Step 2: Convert to fraction form
    345,564.67/518,311.95 = 92,812.33/x
  3. Step 3: Cross multiply
    345,564.67x = 518,311.95 × 92,812.33
  4. Step 4: Simplify right side
    345,564.67x = 48,105,739,746.34
  5. Step 5: Solve for x
    x = 48,105,739,746.34/345,564.67
  6. Step 6: Final answer
    x = 139,209.08

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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.