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Finding the Fourth Proportional to 439,884.80, 607,048.08 and 238,680.80

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Solution

The fourth proportional to 439,884.80, 607,048.08 and 238,680.80 is: 329,383.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,884.80 : 607,048.08 = 238,680.80 : x
  2. Step 2: Convert to fraction form
    439,884.80/607,048.08 = 238,680.80/x
  3. Step 3: Cross multiply
    439,884.80x = 607,048.08 × 238,680.80
  4. Step 4: Simplify right side
    439,884.80x = 144,890,721,372.86
  5. Step 5: Solve for x
    x = 144,890,721,372.86/439,884.80
  6. Step 6: Final answer
    x = 329,383.33

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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.