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Finding the Fourth Proportional to 318,969.94, 440,173.35 and 173,777.45

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Solution

The fourth proportional to 318,969.94, 440,173.35 and 173,777.45 is: 239,810.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,969.94 : 440,173.35 = 173,777.45 : x
  2. Step 2: Convert to fraction form
    318,969.94/440,173.35 = 173,777.45/x
  3. Step 3: Cross multiply
    318,969.94x = 440,173.35 × 173,777.45
  4. Step 4: Simplify right side
    318,969.94x = 76,492,203,421.39
  5. Step 5: Solve for x
    x = 76,492,203,421.39/318,969.94
  6. Step 6: Final answer
    x = 239,810.07

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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.