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Finding the Fourth Proportional to 314,726.36, 434,310.18 and 171,487.47

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Solution

The fourth proportional to 314,726.36, 434,310.18 and 171,487.47 is: 236,646.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,726.36 : 434,310.18 = 171,487.47 : x
  2. Step 2: Convert to fraction form
    314,726.36/434,310.18 = 171,487.47/x
  3. Step 3: Cross multiply
    314,726.36x = 434,310.18 × 171,487.47
  4. Step 4: Simplify right side
    314,726.36x = 74,478,753,963.44
  5. Step 5: Solve for x
    x = 74,478,753,963.44/314,726.36
  6. Step 6: Final answer
    x = 236,646.07

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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.