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Finding the Fourth Proportional to 519,630.30, 779,554.80 and 164,680.20

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Solution

The fourth proportional to 519,630.30, 779,554.80 and 164,680.20 is: 247,054.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,630.30 : 779,554.80 = 164,680.20 : x
  2. Step 2: Convert to fraction form
    519,630.30/779,554.80 = 164,680.20/x
  3. Step 3: Cross multiply
    519,630.30x = 779,554.80 × 164,680.20
  4. Step 4: Simplify right side
    519,630.30x = 128,377,240,374.96
  5. Step 5: Solve for x
    x = 128,377,240,374.96/519,630.30
  6. Step 6: Final answer
    x = 247,054.95

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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.