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Finding the Fourth Proportional to 271,088.01, 406,079.79 and 128,501.10

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Solution

The fourth proportional to 271,088.01, 406,079.79 and 128,501.10 is: 192,489.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,088.01 : 406,079.79 = 128,501.10 : x
  2. Step 2: Convert to fraction form
    271,088.01/406,079.79 = 128,501.10/x
  3. Step 3: Cross multiply
    271,088.01x = 406,079.79 × 128,501.10
  4. Step 4: Simplify right side
    271,088.01x = 52,181,699,702.77
  5. Step 5: Solve for x
    x = 52,181,699,702.77/271,088.01
  6. Step 6: Final answer
    x = 192,489.88

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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.