Home / 285,717.90-428,511.26-170,345.04

Finding the Fourth Proportional to 285,717.90, 428,511.26 and 170,345.04

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Solution

The fourth proportional to 285,717.90, 428,511.26 and 170,345.04 is: 255,478.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,717.90 : 428,511.26 = 170,345.04 : x
  2. Step 2: Convert to fraction form
    285,717.90/428,511.26 = 170,345.04/x
  3. Step 3: Cross multiply
    285,717.90x = 428,511.26 × 170,345.04
  4. Step 4: Simplify right side
    285,717.90x = 72,994,765,582.59
  5. Step 5: Solve for x
    x = 72,994,765,582.59/285,717.90
  6. Step 6: Final answer
    x = 255,478.45

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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.