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Finding the Fourth Proportional to 439,880.78, 607,035.06 and 238,676.78

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Solution

The fourth proportional to 439,880.78, 607,035.06 and 238,676.78 is: 329,373.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,880.78 : 607,035.06 = 238,676.78 : x
  2. Step 2: Convert to fraction form
    439,880.78/607,035.06 = 238,676.78/x
  3. Step 3: Cross multiply
    439,880.78x = 607,035.06 × 238,676.78
  4. Step 4: Simplify right side
    439,880.78x = 144,885,173,467.91
  5. Step 5: Solve for x
    x = 144,885,173,467.91/439,880.78
  6. Step 6: Final answer
    x = 329,373.73

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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.