Home / 285,905.30-428,827.77-117,443.39

Finding the Fourth Proportional to 285,905.30, 428,827.77 and 117,443.39

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Solution

The fourth proportional to 285,905.30, 428,827.77 and 117,443.39 is: 176,152.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,905.30 : 428,827.77 = 117,443.39 : x
  2. Step 2: Convert to fraction form
    285,905.30/428,827.77 = 117,443.39/x
  3. Step 3: Cross multiply
    285,905.30x = 428,827.77 × 117,443.39
  4. Step 4: Simplify right side
    285,905.30x = 50,362,984,890.80
  5. Step 5: Solve for x
    x = 50,362,984,890.80/285,905.30
  6. Step 6: Final answer
    x = 176,152.68

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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.