Home / 369,100.27-509,345.36-207,989.11

Finding the Fourth Proportional to 369,100.27, 509,345.36 and 207,989.11

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Solution

The fourth proportional to 369,100.27, 509,345.36 and 207,989.11 is: 287,017.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,100.27 : 509,345.36 = 207,989.11 : x
  2. Step 2: Convert to fraction form
    369,100.27/509,345.36 = 207,989.11/x
  3. Step 3: Cross multiply
    369,100.27x = 509,345.36 × 207,989.11
  4. Step 4: Simplify right side
    369,100.27x = 105,938,285,562.30
  5. Step 5: Solve for x
    x = 105,938,285,562.30/369,100.27
  6. Step 6: Final answer
    x = 287,017.64

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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.