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Finding the Fourth Proportional to 203,312.96, 280,221.66 and 135,208.28

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Solution

The fourth proportional to 203,312.96, 280,221.66 and 135,208.28 is: 186,354.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,312.96 : 280,221.66 = 135,208.28 : x
  2. Step 2: Convert to fraction form
    203,312.96/280,221.66 = 135,208.28/x
  3. Step 3: Cross multiply
    203,312.96x = 280,221.66 × 135,208.28
  4. Step 4: Simplify right side
    203,312.96x = 37,888,288,667.34
  5. Step 5: Solve for x
    x = 37,888,288,667.34/203,312.96
  6. Step 6: Final answer
    x = 186,354.52

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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.