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Finding the Fourth Proportional to 449,701.38, 620,388.57 and 268,307.84

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Solution

The fourth proportional to 449,701.38, 620,388.57 and 268,307.84 is: 370,145.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,701.38 : 620,388.57 = 268,307.84 : x
  2. Step 2: Convert to fraction form
    449,701.38/620,388.57 = 268,307.84/x
  3. Step 3: Cross multiply
    449,701.38x = 620,388.57 × 268,307.84
  4. Step 4: Simplify right side
    449,701.38x = 166,455,118,225.28
  5. Step 5: Solve for x
    x = 166,455,118,225.28/449,701.38
  6. Step 6: Final answer
    x = 370,145.89

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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.