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Finding the Fourth Proportional to 439,076.40, 657,059.40 and 299,108.40

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Solution

The fourth proportional to 439,076.40, 657,059.40 and 299,108.40 is: 447,603.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,076.40 : 657,059.40 = 299,108.40 : x
  2. Step 2: Convert to fraction form
    439,076.40/657,059.40 = 299,108.40/x
  3. Step 3: Cross multiply
    439,076.40x = 657,059.40 × 299,108.40
  4. Step 4: Simplify right side
    439,076.40x = 196,531,985,838.96
  5. Step 5: Solve for x
    x = 196,531,985,838.96/439,076.40
  6. Step 6: Final answer
    x = 447,603.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.