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Finding the Fourth Proportional to 308,079.95, 425,108.27 and 172,097.09

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Solution

The fourth proportional to 308,079.95, 425,108.27 and 172,097.09 is: 237,470.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,079.95 : 425,108.27 = 172,097.09 : x
  2. Step 2: Convert to fraction form
    308,079.95/425,108.27 = 172,097.09/x
  3. Step 3: Cross multiply
    308,079.95x = 425,108.27 × 172,097.09
  4. Step 4: Simplify right side
    308,079.95x = 73,159,893,215.91
  5. Step 5: Solve for x
    x = 73,159,893,215.91/308,079.95
  6. Step 6: Final answer
    x = 237,470.48

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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.