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Finding the Fourth Proportional to 293,701.72, 440,553 and 72,085.72

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Solution

The fourth proportional to 293,701.72, 440,553 and 72,085.72 is: 108,128.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,701.72 : 440,553 = 72,085.72 : x
  2. Step 2: Convert to fraction form
    293,701.72/440,553 = 72,085.72/x
  3. Step 3: Cross multiply
    293,701.72x = 440,553 × 72,085.72
  4. Step 4: Simplify right side
    293,701.72x = 31,757,580,203.16
  5. Step 5: Solve for x
    x = 31,757,580,203.16/293,701.72
  6. Step 6: Final answer
    x = 108,128.68

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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.