Home / 285,498.09-428,214.02-75,152.43

Finding the Fourth Proportional to 285,498.09, 428,214.02 and 75,152.43

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Solution

The fourth proportional to 285,498.09, 428,214.02 and 75,152.43 is: 112,719.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,498.09 : 428,214.02 = 75,152.43 : x
  2. Step 2: Convert to fraction form
    285,498.09/428,214.02 = 75,152.43/x
  3. Step 3: Cross multiply
    285,498.09x = 428,214.02 × 75,152.43
  4. Step 4: Simplify right side
    285,498.09x = 32,181,323,787.31
  5. Step 5: Solve for x
    x = 32,181,323,787.31/285,498.09
  6. Step 6: Final answer
    x = 112,719.93

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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.