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Finding the Fourth Proportional to 438,628.07, 605,308.65 and 237,424.07

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Solution

The fourth proportional to 438,628.07, 605,308.65 and 237,424.07 is: 327,646.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,628.07 : 605,308.65 = 237,424.07 : x
  2. Step 2: Convert to fraction form
    438,628.07/605,308.65 = 237,424.07/x
  3. Step 3: Cross multiply
    438,628.07x = 605,308.65 × 237,424.07
  4. Step 4: Simplify right side
    438,628.07x = 143,714,843,289.21
  5. Step 5: Solve for x
    x = 143,714,843,289.21/438,628.07
  6. Step 6: Final answer
    x = 327,646.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.