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Finding the Fourth Proportional to 439,564.64, 606,603 and 238,360.64

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Solution

The fourth proportional to 439,564.64, 606,603 and 238,360.64 is: 328,939.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,564.64 : 606,603 = 238,360.64 : x
  2. Step 2: Convert to fraction form
    439,564.64/606,603 = 238,360.64/x
  3. Step 3: Cross multiply
    439,564.64x = 606,603 × 238,360.64
  4. Step 4: Simplify right side
    439,564.64x = 144,590,279,305.92
  5. Step 5: Solve for x
    x = 144,590,279,305.92/439,564.64
  6. Step 6: Final answer
    x = 328,939.74

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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.