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Finding the Fourth Proportional to 551,409.30, 827,113.95 and 218,985.30

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Solution

The fourth proportional to 551,409.30, 827,113.95 and 218,985.30 is: 328,477.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,409.30 : 827,113.95 = 218,985.30 : x
  2. Step 2: Convert to fraction form
    551,409.30/827,113.95 = 218,985.30/x
  3. Step 3: Cross multiply
    551,409.30x = 827,113.95 × 218,985.30
  4. Step 4: Simplify right side
    551,409.30x = 181,125,796,474.94
  5. Step 5: Solve for x
    x = 181,125,796,474.94/551,409.30
  6. Step 6: Final answer
    x = 328,477.95

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Similar ratio
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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.