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Finding the Fourth Proportional to 279,208.82, 385,307.88 and 151,884.12

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Solution

The fourth proportional to 279,208.82, 385,307.88 and 151,884.12 is: 209,599.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,208.82 : 385,307.88 = 151,884.12 : x
  2. Step 2: Convert to fraction form
    279,208.82/385,307.88 = 151,884.12/x
  3. Step 3: Cross multiply
    279,208.82x = 385,307.88 × 151,884.12
  4. Step 4: Simplify right side
    279,208.82x = 58,522,148,282.87
  5. Step 5: Solve for x
    x = 58,522,148,282.87/279,208.82
  6. Step 6: Final answer
    x = 209,599.93

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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.