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Finding the Fourth Proportional to 279,234.84, 385,171.29 and 243,510.60

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Solution

The fourth proportional to 279,234.84, 385,171.29 and 243,510.60 is: 335,893.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,234.84 : 385,171.29 = 243,510.60 : x
  2. Step 2: Convert to fraction form
    279,234.84/385,171.29 = 243,510.60/x
  3. Step 3: Cross multiply
    279,234.84x = 385,171.29 × 243,510.60
  4. Step 4: Simplify right side
    279,234.84x = 93,793,291,930.67
  5. Step 5: Solve for x
    x = 93,793,291,930.67/279,234.84
  6. Step 6: Final answer
    x = 335,893.94

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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.