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Finding the Fourth Proportional to 328,753.72, 492,466.02 and 253,613.98

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Solution

The fourth proportional to 328,753.72, 492,466.02 and 253,613.98 is: 379,908.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,753.72 : 492,466.02 = 253,613.98 : x
  2. Step 2: Convert to fraction form
    328,753.72/492,466.02 = 253,613.98/x
  3. Step 3: Cross multiply
    328,753.72x = 492,466.02 × 253,613.98
  4. Step 4: Simplify right side
    328,753.72x = 124,896,267,346.96
  5. Step 5: Solve for x
    x = 124,896,267,346.96/328,753.72
  6. Step 6: Final answer
    x = 379,908.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.