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Finding the Fourth Proportional to 308,810.52, 426,166.08 and 172,843.32

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Solution

The fourth proportional to 308,810.52, 426,166.08 and 172,843.32 is: 238,528.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,810.52 : 426,166.08 = 172,843.32 : x
  2. Step 2: Convert to fraction form
    308,810.52/426,166.08 = 172,843.32/x
  3. Step 3: Cross multiply
    308,810.52x = 426,166.08 × 172,843.32
  4. Step 4: Simplify right side
    308,810.52x = 73,659,960,138.59
  5. Step 5: Solve for x
    x = 73,659,960,138.59/308,810.52
  6. Step 6: Final answer
    x = 238,528.01

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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.