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Finding the Fourth Proportional to 449,136, 619,808.76 and 247,932

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Solution

The fourth proportional to 449,136, 619,808.76 and 247,932 is: 342,146.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,136 : 619,808.76 = 247,932 : x
  2. Step 2: Convert to fraction form
    449,136/619,808.76 = 247,932/x
  3. Step 3: Cross multiply
    449,136x = 619,808.76 × 247,932
  4. Step 4: Simplify right side
    449,136x = 153,670,425,484.32
  5. Step 5: Solve for x
    x = 153,670,425,484.32/449,136
  6. Step 6: Final answer
    x = 342,146.76

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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.