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Finding the Fourth Proportional to 439,878.39, 607,035.39 and 238,674.39

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Solution

The fourth proportional to 439,878.39, 607,035.39 and 238,674.39 is: 329,372.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,878.39 : 607,035.39 = 238,674.39 : x
  2. Step 2: Convert to fraction form
    439,878.39/607,035.39 = 238,674.39/x
  3. Step 3: Cross multiply
    439,878.39x = 607,035.39 × 238,674.39
  4. Step 4: Simplify right side
    439,878.39x = 144,883,801,416.66
  5. Step 5: Solve for x
    x = 144,883,801,416.66/439,878.39
  6. Step 6: Final answer
    x = 329,372.40

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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.