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Finding the Fourth Proportional to 279,235.84, 385,172.67 and 243,511.60

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Solution

The fourth proportional to 279,235.84, 385,172.67 and 243,511.60 is: 335,895.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,235.84 : 385,172.67 = 243,511.60 : x
  2. Step 2: Convert to fraction form
    279,235.84/385,172.67 = 243,511.60/x
  3. Step 3: Cross multiply
    279,235.84x = 385,172.67 × 243,511.60
  4. Step 4: Simplify right side
    279,235.84x = 93,794,013,147.97
  5. Step 5: Solve for x
    x = 93,794,013,147.97/279,235.84
  6. Step 6: Final answer
    x = 335,895.32

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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.