Home / 354,521,209.16-489,320,898.72-207,890,732.36

Finding the Fourth Proportional to 354,521,209.16, 489,320,898.72 and 207,890,732.36

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Solution

The fourth proportional to 354,521,209.16, 489,320,898.72 and 207,890,732.36 is: 286,937,078.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,521,209.16 : 489,320,898.72 = 207,890,732.36 : x
  2. Step 2: Convert to fraction form
    354,521,209.16/489,320,898.72 = 207,890,732.36/x
  3. Step 3: Cross multiply
    354,521,209.16x = 489,320,898.72 × 207,890,732.36
  4. Step 4: Simplify right side
    354,521,209.16x = 101,725,279,993,954,192
  5. Step 5: Solve for x
    x = 101,725,279,993,954,192/354,521,209.16
  6. Step 6: Final answer
    x = 286,937,078.42

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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.