Home / 438,220.67-657,429.48-138,719.22

Finding the Fourth Proportional to 438,220.67, 657,429.48 and 138,719.22

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Solution

The fourth proportional to 438,220.67, 657,429.48 and 138,719.22 is: 208,110.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,220.67 : 657,429.48 = 138,719.22 : x
  2. Step 2: Convert to fraction form
    438,220.67/657,429.48 = 138,719.22/x
  3. Step 3: Cross multiply
    438,220.67x = 657,429.48 × 138,719.22
  4. Step 4: Simplify right side
    438,220.67x = 91,198,104,670.61
  5. Step 5: Solve for x
    x = 91,198,104,670.61/438,220.67
  6. Step 6: Final answer
    x = 208,110.00

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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.