Home / 438,887.22-658,263.60-139,328.70

Finding the Fourth Proportional to 438,887.22, 658,263.60 and 139,328.70

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Solution

The fourth proportional to 438,887.22, 658,263.60 and 139,328.70 is: 208,971.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,887.22 : 658,263.60 = 139,328.70 : x
  2. Step 2: Convert to fraction form
    438,887.22/658,263.60 = 139,328.70/x
  3. Step 3: Cross multiply
    438,887.22x = 658,263.60 × 139,328.70
  4. Step 4: Simplify right side
    438,887.22x = 91,715,011,645.32
  5. Step 5: Solve for x
    x = 91,715,011,645.32/438,887.22
  6. Step 6: Final answer
    x = 208,971.71

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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.