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Finding the Fourth Proportional to 438,042.93, 657,145.44 and 138,598.89

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Solution

The fourth proportional to 438,042.93, 657,145.44 and 138,598.89 is: 207,923.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,042.93 : 657,145.44 = 138,598.89 : x
  2. Step 2: Convert to fraction form
    438,042.93/657,145.44 = 138,598.89/x
  3. Step 3: Cross multiply
    438,042.93x = 657,145.44 × 138,598.89
  4. Step 4: Simplify right side
    438,042.93x = 91,079,628,552.56
  5. Step 5: Solve for x
    x = 91,079,628,552.56/438,042.93
  6. Step 6: Final answer
    x = 207,923.98

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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.