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Finding the Fourth Proportional to 318,200.40, 439,084.80 and 182,266.20

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Solution

The fourth proportional to 318,200.40, 439,084.80 and 182,266.20 is: 251,509.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,200.40 : 439,084.80 = 182,266.20 : x
  2. Step 2: Convert to fraction form
    318,200.40/439,084.80 = 182,266.20/x
  3. Step 3: Cross multiply
    318,200.40x = 439,084.80 × 182,266.20
  4. Step 4: Simplify right side
    318,200.40x = 80,030,317,973.76
  5. Step 5: Solve for x
    x = 80,030,317,973.76/318,200.40
  6. Step 6: Final answer
    x = 251,509.17

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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.