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Finding the Fourth Proportional to 419,512.84, 578,913.28 and 238,221.48

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Solution

The fourth proportional to 419,512.84, 578,913.28 and 238,221.48 is: 328,737.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,512.84 : 578,913.28 = 238,221.48 : x
  2. Step 2: Convert to fraction form
    419,512.84/578,913.28 = 238,221.48/x
  3. Step 3: Cross multiply
    419,512.84x = 578,913.28 × 238,221.48
  4. Step 4: Simplify right side
    419,512.84x = 137,909,578,353.25
  5. Step 5: Solve for x
    x = 137,909,578,353.25/419,512.84
  6. Step 6: Final answer
    x = 328,737.44

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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.