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Finding the Fourth Proportional to 519,228.30, 778,915.35 and 164,205.30

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Solution

The fourth proportional to 519,228.30, 778,915.35 and 164,205.30 is: 246,331.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,228.30 : 778,915.35 = 164,205.30 : x
  2. Step 2: Convert to fraction form
    519,228.30/778,915.35 = 164,205.30/x
  3. Step 3: Cross multiply
    519,228.30x = 778,915.35 × 164,205.30
  4. Step 4: Simplify right side
    519,228.30x = 127,902,028,721.36
  5. Step 5: Solve for x
    x = 127,902,028,721.36/519,228.30
  6. Step 6: Final answer
    x = 246,331.00

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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.