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Finding the Fourth Proportional to 207,971.82, 287,001.11 and 112,478.51

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Solution

The fourth proportional to 207,971.82, 287,001.11 and 112,478.51 is: 155,220.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,971.82 : 287,001.11 = 112,478.51 : x
  2. Step 2: Convert to fraction form
    207,971.82/287,001.11 = 112,478.51/x
  3. Step 3: Cross multiply
    207,971.82x = 287,001.11 × 112,478.51
  4. Step 4: Simplify right side
    207,971.82x = 32,281,457,025.39
  5. Step 5: Solve for x
    x = 32,281,457,025.39/207,971.82
  6. Step 6: Final answer
    x = 155,220.35

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.