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Finding the Fourth Proportional to 453,603.08, 680,379.60 and 138,035.36

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Solution

The fourth proportional to 453,603.08, 680,379.60 and 138,035.36 is: 207,045.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,603.08 : 680,379.60 = 138,035.36 : x
  2. Step 2: Convert to fraction form
    453,603.08/680,379.60 = 138,035.36/x
  3. Step 3: Cross multiply
    453,603.08x = 680,379.60 × 138,035.36
  4. Step 4: Simplify right side
    453,603.08x = 93,916,443,022.66
  5. Step 5: Solve for x
    x = 93,916,443,022.66/453,603.08
  6. Step 6: Final answer
    x = 207,045.43

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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.