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Finding the Fourth Proportional to 207,973.82, 287,003.87 and 112,480.51

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Solution

The fourth proportional to 207,973.82, 287,003.87 and 112,480.51 is: 155,223.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,973.82 : 287,003.87 = 112,480.51 : x
  2. Step 2: Convert to fraction form
    207,973.82/287,003.87 = 112,480.51/x
  3. Step 3: Cross multiply
    207,973.82x = 287,003.87 × 112,480.51
  4. Step 4: Simplify right side
    207,973.82x = 32,282,341,669.57
  5. Step 5: Solve for x
    x = 32,282,341,669.57/207,973.82
  6. Step 6: Final answer
    x = 155,223.10

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Why These Related Problems?

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