Home / 287,701.98-431,677.45-154,426.60

Finding the Fourth Proportional to 287,701.98, 431,677.45 and 154,426.60

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Solution

The fourth proportional to 287,701.98, 431,677.45 and 154,426.60 is: 231,706.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,701.98 : 431,677.45 = 154,426.60 : x
  2. Step 2: Convert to fraction form
    287,701.98/431,677.45 = 154,426.60/x
  3. Step 3: Cross multiply
    287,701.98x = 431,677.45 × 154,426.60
  4. Step 4: Simplify right side
    287,701.98x = 66,662,481,632.80
  5. Step 5: Solve for x
    x = 66,662,481,632.80/287,701.98
  6. Step 6: Final answer
    x = 231,706.72

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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.