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Finding the Fourth Proportional to 271,973.78, 407,960.59 and 84,985.28

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Solution

The fourth proportional to 271,973.78, 407,960.59 and 84,985.28 is: 127,477.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,973.78 : 407,960.59 = 84,985.28 : x
  2. Step 2: Convert to fraction form
    271,973.78/407,960.59 = 84,985.28/x
  3. Step 3: Cross multiply
    271,973.78x = 407,960.59 × 84,985.28
  4. Step 4: Simplify right side
    271,973.78x = 34,670,644,970.12
  5. Step 5: Solve for x
    x = 34,670,644,970.12/271,973.78
  6. Step 6: Final answer
    x = 127,477.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.