Home / 287,367.09-431,024.04-135,529.35

Finding the Fourth Proportional to 287,367.09, 431,024.04 and 135,529.35

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Solution

The fourth proportional to 287,367.09, 431,024.04 and 135,529.35 is: 203,281.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,367.09 : 431,024.04 = 135,529.35 : x
  2. Step 2: Convert to fraction form
    287,367.09/431,024.04 = 135,529.35/x
  3. Step 3: Cross multiply
    287,367.09x = 431,024.04 × 135,529.35
  4. Step 4: Simplify right side
    287,367.09x = 58,416,407,975.57
  5. Step 5: Solve for x
    x = 58,416,407,975.57/287,367.09
  6. Step 6: Final answer
    x = 203,281.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.