Home / 287,426.07-430,951.37-137,661.57

Finding the Fourth Proportional to 287,426.07, 430,951.37 and 137,661.57

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Solution

The fourth proportional to 287,426.07, 430,951.37 and 137,661.57 is: 206,402.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,426.07 : 430,951.37 = 137,661.57 : x
  2. Step 2: Convert to fraction form
    287,426.07/430,951.37 = 137,661.57/x
  3. Step 3: Cross multiply
    287,426.07x = 430,951.37 × 137,661.57
  4. Step 4: Simplify right side
    287,426.07x = 59,325,441,499.54
  5. Step 5: Solve for x
    x = 59,325,441,499.54/287,426.07
  6. Step 6: Final answer
    x = 206,402.44

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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.