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Finding the Fourth Proportional to 423,507.94, 635,127.03 and 139,132.48

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Solution

The fourth proportional to 423,507.94, 635,127.03 and 139,132.48 is: 208,654.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,507.94 : 635,127.03 = 139,132.48 : x
  2. Step 2: Convert to fraction form
    423,507.94/635,127.03 = 139,132.48/x
  3. Step 3: Cross multiply
    423,507.94x = 635,127.03 × 139,132.48
  4. Step 4: Simplify right side
    423,507.94x = 88,366,798,798.93
  5. Step 5: Solve for x
    x = 88,366,798,798.93/423,507.94
  6. Step 6: Final answer
    x = 208,654.41

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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.