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Finding the Fourth Proportional to 318,118.72, 439,003.68 and 174,888

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Solution

The fourth proportional to 318,118.72, 439,003.68 and 174,888 is: 241,345.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,118.72 : 439,003.68 = 174,888 : x
  2. Step 2: Convert to fraction form
    318,118.72/439,003.68 = 174,888/x
  3. Step 3: Cross multiply
    318,118.72x = 439,003.68 × 174,888
  4. Step 4: Simplify right side
    318,118.72x = 76,776,475,587.84
  5. Step 5: Solve for x
    x = 76,776,475,587.84/318,118.72
  6. Step 6: Final answer
    x = 241,345.36

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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.