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Finding the Fourth Proportional to 308,841.71, 426,208.77 and 172,872.27

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Solution

The fourth proportional to 308,841.71, 426,208.77 and 172,872.27 is: 238,567.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,841.71 : 426,208.77 = 172,872.27 : x
  2. Step 2: Convert to fraction form
    308,841.71/426,208.77 = 172,872.27/x
  3. Step 3: Cross multiply
    308,841.71x = 426,208.77 × 172,872.27
  4. Step 4: Simplify right side
    308,841.71x = 73,679,677,563.81
  5. Step 5: Solve for x
    x = 73,679,677,563.81/308,841.71
  6. Step 6: Final answer
    x = 238,567.77

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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.