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Finding the Fourth Proportional to 426,549.51, 639,645.60 and 173,658

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Solution

The fourth proportional to 426,549.51, 639,645.60 and 173,658 is: 260,414.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,549.51 : 639,645.60 = 173,658 : x
  2. Step 2: Convert to fraction form
    426,549.51/639,645.60 = 173,658/x
  3. Step 3: Cross multiply
    426,549.51x = 639,645.60 × 173,658
  4. Step 4: Simplify right side
    426,549.51x = 111,079,575,604.80
  5. Step 5: Solve for x
    x = 111,079,575,604.80/426,549.51
  6. Step 6: Final answer
    x = 260,414.26

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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.