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Finding the Fourth Proportional to 345,272.68, 517,812.54 and 218,724.76

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Solution

The fourth proportional to 345,272.68, 517,812.54 and 218,724.76 is: 328,026.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,272.68 : 517,812.54 = 218,724.76 : x
  2. Step 2: Convert to fraction form
    345,272.68/517,812.54 = 218,724.76/x
  3. Step 3: Cross multiply
    345,272.68x = 517,812.54 × 218,724.76
  4. Step 4: Simplify right side
    345,272.68x = 113,258,423,536.49
  5. Step 5: Solve for x
    x = 113,258,423,536.49/345,272.68
  6. Step 6: Final answer
    x = 328,026.02

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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.