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Finding the Fourth Proportional to 318,218.16, 439,142.64 and 174,987.44

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Solution

The fourth proportional to 318,218.16, 439,142.64 and 174,987.44 is: 241,483.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,218.16 : 439,142.64 = 174,987.44 : x
  2. Step 2: Convert to fraction form
    318,218.16/439,142.64 = 174,987.44/x
  3. Step 3: Cross multiply
    318,218.16x = 439,142.64 × 174,987.44
  4. Step 4: Simplify right side
    318,218.16x = 76,844,446,368.44
  5. Step 5: Solve for x
    x = 76,844,446,368.44/318,218.16
  6. Step 6: Final answer
    x = 241,483.54

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1.5x scale

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.