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Finding the Fourth Proportional to 438,903.72, 605,687.13 and 237,699.72

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Solution

The fourth proportional to 438,903.72, 605,687.13 and 237,699.72 is: 328,025.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,903.72 : 605,687.13 = 237,699.72 : x
  2. Step 2: Convert to fraction form
    438,903.72/605,687.13 = 237,699.72/x
  3. Step 3: Cross multiply
    438,903.72x = 605,687.13 × 237,699.72
  4. Step 4: Simplify right side
    438,903.72x = 143,971,661,208.60
  5. Step 5: Solve for x
    x = 143,971,661,208.60/438,903.72
  6. Step 6: Final answer
    x = 328,025.61

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1.5x scale

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.