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Finding the Fourth Proportional to 345,427.51, 518,159.76 and 108,788.62

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Solution

The fourth proportional to 345,427.51, 518,159.76 and 108,788.62 is: 163,188.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,427.51 : 518,159.76 = 108,788.62 : x
  2. Step 2: Convert to fraction form
    345,427.51/518,159.76 = 108,788.62/x
  3. Step 3: Cross multiply
    345,427.51x = 518,159.76 × 108,788.62
  4. Step 4: Simplify right side
    345,427.51x = 56,369,885,229.93
  5. Step 5: Solve for x
    x = 56,369,885,229.93/345,427.51
  6. Step 6: Final answer
    x = 163,188.75

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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.