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Finding the Fourth Proportional to 424,925.44, 637,456.74 and 172,221.64

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Solution

The fourth proportional to 424,925.44, 637,456.74 and 172,221.64 is: 258,360.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,925.44 : 637,456.74 = 172,221.64 : x
  2. Step 2: Convert to fraction form
    424,925.44/637,456.74 = 172,221.64/x
  3. Step 3: Cross multiply
    424,925.44x = 637,456.74 × 172,221.64
  4. Step 4: Simplify right side
    424,925.44x = 109,783,845,191.85
  5. Step 5: Solve for x
    x = 109,783,845,191.85/424,925.44
  6. Step 6: Final answer
    x = 258,360.26

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1.5x scale

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.