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Finding the Fourth Proportional to 277,030.29, 415,485.09 and 74,621.43

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Solution

The fourth proportional to 277,030.29, 415,485.09 and 74,621.43 is: 111,915.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,030.29 : 415,485.09 = 74,621.43 : x
  2. Step 2: Convert to fraction form
    277,030.29/415,485.09 = 74,621.43/x
  3. Step 3: Cross multiply
    277,030.29x = 415,485.09 × 74,621.43
  4. Step 4: Simplify right side
    277,030.29x = 31,004,091,559.48
  5. Step 5: Solve for x
    x = 31,004,091,559.48/277,030.29
  6. Step 6: Final answer
    x = 111,915.89

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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.