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Finding the Fourth Proportional to 345,179.96, 517,799.88 and 105,347.90

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Solution

The fourth proportional to 345,179.96, 517,799.88 and 105,347.90 is: 158,030.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,179.96 : 517,799.88 = 105,347.90 : x
  2. Step 2: Convert to fraction form
    345,179.96/517,799.88 = 105,347.90/x
  3. Step 3: Cross multiply
    345,179.96x = 517,799.88 × 105,347.90
  4. Step 4: Simplify right side
    345,179.96x = 54,549,129,978.25
  5. Step 5: Solve for x
    x = 54,549,129,978.25/345,179.96
  6. Step 6: Final answer
    x = 158,030.99

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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.