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Finding the Fourth Proportional to 285,055.66, 427,597.26 and 74,693.80

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Solution

The fourth proportional to 285,055.66, 427,597.26 and 74,693.80 is: 112,044.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,055.66 : 427,597.26 = 74,693.80 : x
  2. Step 2: Convert to fraction form
    285,055.66/427,597.26 = 74,693.80/x
  3. Step 3: Cross multiply
    285,055.66x = 427,597.26 × 74,693.80
  4. Step 4: Simplify right side
    285,055.66x = 31,938,864,218.99
  5. Step 5: Solve for x
    x = 31,938,864,218.99/285,055.66
  6. Step 6: Final answer
    x = 112,044.31

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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.