Home / 287,366.09-431,022.54-135,528.35

Finding the Fourth Proportional to 287,366.09, 431,022.54 and 135,528.35

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Solution

The fourth proportional to 287,366.09, 431,022.54 and 135,528.35 is: 203,279.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,366.09 : 431,022.54 = 135,528.35 : x
  2. Step 2: Convert to fraction form
    287,366.09/431,022.54 = 135,528.35/x
  3. Step 3: Cross multiply
    287,366.09x = 431,022.54 × 135,528.35
  4. Step 4: Simplify right side
    287,366.09x = 58,415,773,659.01
  5. Step 5: Solve for x
    x = 58,415,773,659.01/287,366.09
  6. Step 6: Final answer
    x = 203,279.98

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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.