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Finding the Fourth Proportional to 315,959.22, 435,772.73 and 238,692.51

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Solution

The fourth proportional to 315,959.22, 435,772.73 and 238,692.51 is: 329,206.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,959.22 : 435,772.73 = 238,692.51 : x
  2. Step 2: Convert to fraction form
    315,959.22/435,772.73 = 238,692.51/x
  3. Step 3: Cross multiply
    315,959.22x = 435,772.73 × 238,692.51
  4. Step 4: Simplify right side
    315,959.22x = 104,015,685,519.79
  5. Step 5: Solve for x
    x = 104,015,685,519.79/315,959.22
  6. Step 6: Final answer
    x = 329,206.05

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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.