Home / 287,975.20-431,962.80-182,869.60

Finding the Fourth Proportional to 287,975.20, 431,962.80 and 182,869.60

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Solution

The fourth proportional to 287,975.20, 431,962.80 and 182,869.60 is: 274,304.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,975.20 : 431,962.80 = 182,869.60 : x
  2. Step 2: Convert to fraction form
    287,975.20/431,962.80 = 182,869.60/x
  3. Step 3: Cross multiply
    287,975.20x = 431,962.80 × 182,869.60
  4. Step 4: Simplify right side
    287,975.20x = 78,992,864,450.88
  5. Step 5: Solve for x
    x = 78,992,864,450.88/287,975.20
  6. Step 6: Final answer
    x = 274,304.40

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1.5x scale

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.