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Finding the Fourth Proportional to 423,431.04, 635,197.92 and 186,833.28

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Solution

The fourth proportional to 423,431.04, 635,197.92 and 186,833.28 is: 280,272.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,431.04 : 635,197.92 = 186,833.28 : x
  2. Step 2: Convert to fraction form
    423,431.04/635,197.92 = 186,833.28/x
  3. Step 3: Cross multiply
    423,431.04x = 635,197.92 × 186,833.28
  4. Step 4: Simplify right side
    423,431.04x = 118,676,110,842.78
  5. Step 5: Solve for x
    x = 118,676,110,842.78/423,431.04
  6. Step 6: Final answer
    x = 280,272.58

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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.