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Finding the Fourth Proportional to 369,435.45, 509,813.67 and 208,287.27

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Solution

The fourth proportional to 369,435.45, 509,813.67 and 208,287.27 is: 287,432.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,435.45 : 509,813.67 = 208,287.27 : x
  2. Step 2: Convert to fraction form
    369,435.45/509,813.67 = 208,287.27/x
  3. Step 3: Cross multiply
    369,435.45x = 509,813.67 × 208,287.27
  4. Step 4: Simplify right side
    369,435.45x = 106,187,697,532.98
  5. Step 5: Solve for x
    x = 106,187,697,532.98/369,435.45
  6. Step 6: Final answer
    x = 287,432.34

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1.5x scale

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.