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Finding the Fourth Proportional to 478,299.98, 717,491.28 and 123,311.00

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Solution

The fourth proportional to 478,299.98, 717,491.28 and 123,311.00 is: 184,977.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,299.98 : 717,491.28 = 123,311.00 : x
  2. Step 2: Convert to fraction form
    478,299.98/717,491.28 = 123,311.00/x
  3. Step 3: Cross multiply
    478,299.98x = 717,491.28 × 123,311.00
  4. Step 4: Simplify right side
    478,299.98x = 88,474,569,484.22
  5. Step 5: Solve for x
    x = 88,474,569,484.22/478,299.98
  6. Step 6: Final answer
    x = 184,977.15

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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.