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Finding the Fourth Proportional to 424,209.36, 636,775.11 and 171,663.72

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Solution

The fourth proportional to 424,209.36, 636,775.11 and 171,663.72 is: 257,682.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,209.36 : 636,775.11 = 171,663.72 : x
  2. Step 2: Convert to fraction form
    424,209.36/636,775.11 = 171,663.72/x
  3. Step 3: Cross multiply
    424,209.36x = 636,775.11 × 171,663.72
  4. Step 4: Simplify right side
    424,209.36x = 109,311,184,186.01
  5. Step 5: Solve for x
    x = 109,311,184,186.01/424,209.36
  6. Step 6: Final answer
    x = 257,682.16

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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.