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Finding the Fourth Proportional to 268,109.95, 402,164.60 and 68,430.32

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Solution

The fourth proportional to 268,109.95, 402,164.60 and 68,430.32 is: 102,645.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,109.95 : 402,164.60 = 68,430.32 : x
  2. Step 2: Convert to fraction form
    268,109.95/402,164.60 = 68,430.32/x
  3. Step 3: Cross multiply
    268,109.95x = 402,164.60 × 68,430.32
  4. Step 4: Simplify right side
    268,109.95x = 27,520,251,425.81
  5. Step 5: Solve for x
    x = 27,520,251,425.81/268,109.95
  6. Step 6: Final answer
    x = 102,645.39

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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.