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Finding the Fourth Proportional to 439,868, 607,021.08 and 238,664

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Solution

The fourth proportional to 439,868, 607,021.08 and 238,664 is: 329,358.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,868 : 607,021.08 = 238,664 : x
  2. Step 2: Convert to fraction form
    439,868/607,021.08 = 238,664/x
  3. Step 3: Cross multiply
    439,868x = 607,021.08 × 238,664
  4. Step 4: Simplify right side
    439,868x = 144,874,079,037.12
  5. Step 5: Solve for x
    x = 144,874,079,037.12/439,868
  6. Step 6: Final answer
    x = 329,358.08

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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.