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Finding the Fourth Proportional to 370,784.85, 511,696.88 and 209,630.30

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Solution

The fourth proportional to 370,784.85, 511,696.88 and 209,630.30 is: 289,297.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,784.85 : 511,696.88 = 209,630.30 : x
  2. Step 2: Convert to fraction form
    370,784.85/511,696.88 = 209,630.30/x
  3. Step 3: Cross multiply
    370,784.85x = 511,696.88 × 209,630.30
  4. Step 4: Simplify right side
    370,784.85x = 107,267,166,856.83
  5. Step 5: Solve for x
    x = 107,267,166,856.83/370,784.85
  6. Step 6: Final answer
    x = 289,297.60

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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.