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Finding the Fourth Proportional to 318,223.72, 439,133.70 and 174,989.80

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Solution

The fourth proportional to 318,223.72, 439,133.70 and 174,989.80 is: 241,477.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,223.72 : 439,133.70 = 174,989.80 : x
  2. Step 2: Convert to fraction form
    318,223.72/439,133.70 = 174,989.80/x
  3. Step 3: Cross multiply
    318,223.72x = 439,133.70 × 174,989.80
  4. Step 4: Simplify right side
    318,223.72x = 76,843,918,336.26
  5. Step 5: Solve for x
    x = 76,843,918,336.26/318,223.72
  6. Step 6: Final answer
    x = 241,477.66

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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.