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Finding the Fourth Proportional to 300,703.32, 415,113.66 and 187,692.12

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Solution

The fourth proportional to 300,703.32, 415,113.66 and 187,692.12 is: 259,104.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,703.32 : 415,113.66 = 187,692.12 : x
  2. Step 2: Convert to fraction form
    300,703.32/415,113.66 = 187,692.12/x
  3. Step 3: Cross multiply
    300,703.32x = 415,113.66 × 187,692.12
  4. Step 4: Simplify right side
    300,703.32x = 77,913,562,886.36
  5. Step 5: Solve for x
    x = 77,913,562,886.36/300,703.32
  6. Step 6: Final answer
    x = 259,104.43

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1.5x scale

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.