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Finding the Fourth Proportional to 318,018.91, 438,871.22 and 182,052.31

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Solution

The fourth proportional to 318,018.91, 438,871.22 and 182,052.31 is: 251,235.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,018.91 : 438,871.22 = 182,052.31 : x
  2. Step 2: Convert to fraction form
    318,018.91/438,871.22 = 182,052.31/x
  3. Step 3: Cross multiply
    318,018.91x = 438,871.22 × 182,052.31
  4. Step 4: Simplify right side
    318,018.91x = 79,897,518,483.26
  5. Step 5: Solve for x
    x = 79,897,518,483.26/318,018.91
  6. Step 6: Final answer
    x = 251,235.12

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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.