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Finding the Fourth Proportional to 478,702.18, 660,605.70 and 263,842.36

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Solution

The fourth proportional to 478,702.18, 660,605.70 and 263,842.36 is: 364,100.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,702.18 : 660,605.70 = 263,842.36 : x
  2. Step 2: Convert to fraction form
    478,702.18/660,605.70 = 263,842.36/x
  3. Step 3: Cross multiply
    478,702.18x = 660,605.70 × 263,842.36
  4. Step 4: Simplify right side
    478,702.18x = 174,295,766,917.45
  5. Step 5: Solve for x
    x = 174,295,766,917.45/478,702.18
  6. Step 6: Final answer
    x = 364,100.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.