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Finding the Fourth Proportional to 361,910.98, 542,513.39 and 172,320.41

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Solution

The fourth proportional to 361,910.98, 542,513.39 and 172,320.41 is: 258,312.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,910.98 : 542,513.39 = 172,320.41 : x
  2. Step 2: Convert to fraction form
    361,910.98/542,513.39 = 172,320.41/x
  3. Step 3: Cross multiply
    361,910.98x = 542,513.39 × 172,320.41
  4. Step 4: Simplify right side
    361,910.98x = 93,486,129,547.95
  5. Step 5: Solve for x
    x = 93,486,129,547.95/361,910.98
  6. Step 6: Final answer
    x = 258,312.50

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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.