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Finding the Fourth Proportional to 369,555.92, 509,987.04 and 199,790

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Solution

The fourth proportional to 369,555.92, 509,987.04 and 199,790 is: 275,710.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,555.92 : 509,987.04 = 199,790 : x
  2. Step 2: Convert to fraction form
    369,555.92/509,987.04 = 199,790/x
  3. Step 3: Cross multiply
    369,555.92x = 509,987.04 × 199,790
  4. Step 4: Simplify right side
    369,555.92x = 101,890,310,721.60
  5. Step 5: Solve for x
    x = 101,890,310,721.60/369,555.92
  6. Step 6: Final answer
    x = 275,710.13

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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.