Home / 438,573.18-657,883.08-139,077.38

Finding the Fourth Proportional to 438,573.18, 657,883.08 and 139,077.38

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Solution

The fourth proportional to 438,573.18, 657,883.08 and 139,077.38 is: 208,623.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,573.18 : 657,883.08 = 139,077.38 : x
  2. Step 2: Convert to fraction form
    438,573.18/657,883.08 = 139,077.38/x
  3. Step 3: Cross multiply
    438,573.18x = 657,883.08 × 139,077.38
  4. Step 4: Simplify right side
    438,573.18x = 91,496,655,112.73
  5. Step 5: Solve for x
    x = 91,496,655,112.73/438,573.18
  6. Step 6: Final answer
    x = 208,623.46

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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.