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Finding the Fourth Proportional to 451,779.10, 623,463.47 and 247,840.43

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Solution

The fourth proportional to 451,779.10, 623,463.47 and 247,840.43 is: 342,024.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,779.10 : 623,463.47 = 247,840.43 : x
  2. Step 2: Convert to fraction form
    451,779.10/623,463.47 = 247,840.43/x
  3. Step 3: Cross multiply
    451,779.10x = 623,463.47 × 247,840.43
  4. Step 4: Simplify right side
    451,779.10x = 154,519,456,672.35
  5. Step 5: Solve for x
    x = 154,519,456,672.35/451,779.10
  6. Step 6: Final answer
    x = 342,024.36

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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.