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Finding the Fourth Proportional to 341,448.30, 512,172.45 and 128,215.80

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Solution

The fourth proportional to 341,448.30, 512,172.45 and 128,215.80 is: 192,323.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,448.30 : 512,172.45 = 128,215.80 : x
  2. Step 2: Convert to fraction form
    341,448.30/512,172.45 = 128,215.80/x
  3. Step 3: Cross multiply
    341,448.30x = 512,172.45 × 128,215.80
  4. Step 4: Simplify right side
    341,448.30x = 65,668,600,414.71
  5. Step 5: Solve for x
    x = 65,668,600,414.71/341,448.30
  6. Step 6: Final answer
    x = 192,323.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.