Home / 380,120.81-521,772.49-336,136.59

Finding the Fourth Proportional to 380,120.81, 521,772.49 and 336,136.59

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Solution

The fourth proportional to 380,120.81, 521,772.49 and 336,136.59 is: 461,397.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,120.81 : 521,772.49 = 336,136.59 : x
  2. Step 2: Convert to fraction form
    380,120.81/521,772.49 = 336,136.59/x
  3. Step 3: Cross multiply
    380,120.81x = 521,772.49 × 336,136.59
  4. Step 4: Simplify right side
    380,120.81x = 175,386,824,073.81
  5. Step 5: Solve for x
    x = 175,386,824,073.81/380,120.81
  6. Step 6: Final answer
    x = 461,397.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.