Home / 272,187.98-408,365-139,161.63

Finding the Fourth Proportional to 272,187.98, 408,365 and 139,161.63

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Solution

The fourth proportional to 272,187.98, 408,365 and 139,161.63 is: 208,784.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,187.98 : 408,365 = 139,161.63 : x
  2. Step 2: Convert to fraction form
    272,187.98/408,365 = 139,161.63/x
  3. Step 3: Cross multiply
    272,187.98x = 408,365 × 139,161.63
  4. Step 4: Simplify right side
    272,187.98x = 56,828,739,034.95
  5. Step 5: Solve for x
    x = 56,828,739,034.95/272,187.98
  6. Step 6: Final answer
    x = 208,784.90

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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.