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Finding the Fourth Proportional to 439,902.30, 607,072.23 and 238,698.30

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Solution

The fourth proportional to 439,902.30, 607,072.23 and 238,698.30 is: 329,407.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,902.30 : 607,072.23 = 238,698.30 : x
  2. Step 2: Convert to fraction form
    439,902.30/607,072.23 = 238,698.30/x
  3. Step 3: Cross multiply
    439,902.30x = 607,072.23 × 238,698.30
  4. Step 4: Simplify right side
    439,902.30x = 144,907,109,278.21
  5. Step 5: Solve for x
    x = 144,907,109,278.21/439,902.30
  6. Step 6: Final answer
    x = 329,407.48

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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.