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Finding the Fourth Proportional to 211,677.96, 317,388.15 and 89,955.01

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Solution

The fourth proportional to 211,677.96, 317,388.15 and 89,955.01 is: 134,877.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,677.96 : 317,388.15 = 89,955.01 : x
  2. Step 2: Convert to fraction form
    211,677.96/317,388.15 = 89,955.01/x
  3. Step 3: Cross multiply
    211,677.96x = 317,388.15 × 89,955.01
  4. Step 4: Simplify right side
    211,677.96x = 28,550,653,413.66
  5. Step 5: Solve for x
    x = 28,550,653,413.66/211,677.96
  6. Step 6: Final answer
    x = 134,877.78

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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.