Home / 355,136.22-489,966.41-202,136.13

Finding the Fourth Proportional to 355,136.22, 489,966.41 and 202,136.13

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Solution

The fourth proportional to 355,136.22, 489,966.41 and 202,136.13 is: 278,878.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,136.22 : 489,966.41 = 202,136.13 : x
  2. Step 2: Convert to fraction form
    355,136.22/489,966.41 = 202,136.13/x
  3. Step 3: Cross multiply
    355,136.22x = 489,966.41 × 202,136.13
  4. Step 4: Simplify right side
    355,136.22x = 99,039,912,936.71
  5. Step 5: Solve for x
    x = 99,039,912,936.71/355,136.22
  6. Step 6: Final answer
    x = 278,878.66

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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.