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Finding the Fourth Proportional to 268,841.80, 370,979.94 and 155,671.72

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Solution

The fourth proportional to 268,841.80, 370,979.94 and 155,671.72 is: 214,814.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,841.80 : 370,979.94 = 155,671.72 : x
  2. Step 2: Convert to fraction form
    268,841.80/370,979.94 = 155,671.72/x
  3. Step 3: Cross multiply
    268,841.80x = 370,979.94 × 155,671.72
  4. Step 4: Simplify right side
    268,841.80x = 57,751,085,345.30
  5. Step 5: Solve for x
    x = 57,751,085,345.30/268,841.80
  6. Step 6: Final answer
    x = 214,814.38

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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.