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Finding the Fourth Proportional to 203,434.65, 280,682.85 and 118,535.31

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Solution

The fourth proportional to 203,434.65, 280,682.85 and 118,535.31 is: 163,545.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,434.65 : 280,682.85 = 118,535.31 : x
  2. Step 2: Convert to fraction form
    203,434.65/280,682.85 = 118,535.31/x
  3. Step 3: Cross multiply
    203,434.65x = 280,682.85 × 118,535.31
  4. Step 4: Simplify right side
    203,434.65x = 33,270,829,080.94
  5. Step 5: Solve for x
    x = 33,270,829,080.94/203,434.65
  6. Step 6: Final answer
    x = 163,545.54

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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.