Home / 287,582.40-431,335.80-87,922.80

Finding the Fourth Proportional to 287,582.40, 431,335.80 and 87,922.80

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Solution

The fourth proportional to 287,582.40, 431,335.80 and 87,922.80 is: 131,872.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,582.40 : 431,335.80 = 87,922.80 : x
  2. Step 2: Convert to fraction form
    287,582.40/431,335.80 = 87,922.80/x
  3. Step 3: Cross multiply
    287,582.40x = 431,335.80 × 87,922.80
  4. Step 4: Simplify right side
    287,582.40x = 37,924,251,276.24
  5. Step 5: Solve for x
    x = 37,924,251,276.24/287,582.40
  6. Step 6: Final answer
    x = 131,872.64

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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.