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Finding the Fourth Proportional to 318,365.64, 439,345.62 and 175,136.58

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Solution

The fourth proportional to 318,365.64, 439,345.62 and 175,136.58 is: 241,689.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,365.64 : 439,345.62 = 175,136.58 : x
  2. Step 2: Convert to fraction form
    318,365.64/439,345.62 = 175,136.58/x
  3. Step 3: Cross multiply
    318,365.64x = 439,345.62 × 175,136.58
  4. Step 4: Simplify right side
    318,365.64x = 76,945,489,324.78
  5. Step 5: Solve for x
    x = 76,945,489,324.78/318,365.64
  6. Step 6: Final answer
    x = 241,689.05

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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.