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Finding the Fourth Proportional to 423,957.85, 636,001.32 and 263,904.28

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Solution

The fourth proportional to 423,957.85, 636,001.32 and 263,904.28 is: 395,896.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,957.85 : 636,001.32 = 263,904.28 : x
  2. Step 2: Convert to fraction form
    423,957.85/636,001.32 = 263,904.28/x
  3. Step 3: Cross multiply
    423,957.85x = 636,001.32 × 263,904.28
  4. Step 4: Simplify right side
    423,957.85x = 167,843,468,348.83
  5. Step 5: Solve for x
    x = 167,843,468,348.83/423,957.85
  6. Step 6: Final answer
    x = 395,896.60

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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.