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Finding the Fourth Proportional to 356,349.79, 491,770.63 and 203,384.89

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Solution

The fourth proportional to 356,349.79, 491,770.63 and 203,384.89 is: 280,675.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,349.79 : 491,770.63 = 203,384.89 : x
  2. Step 2: Convert to fraction form
    356,349.79/491,770.63 = 203,384.89/x
  3. Step 3: Cross multiply
    356,349.79x = 491,770.63 × 203,384.89
  4. Step 4: Simplify right side
    356,349.79x = 100,018,715,487.78
  5. Step 5: Solve for x
    x = 100,018,715,487.78/356,349.79
  6. Step 6: Final answer
    x = 280,675.67

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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.