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Finding the Fourth Proportional to 253,843.10, 350,307.98 and 139,114.10

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Solution

The fourth proportional to 253,843.10, 350,307.98 and 139,114.10 is: 191,979.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,843.10 : 350,307.98 = 139,114.10 : x
  2. Step 2: Convert to fraction form
    253,843.10/350,307.98 = 139,114.10/x
  3. Step 3: Cross multiply
    253,843.10x = 350,307.98 × 139,114.10
  4. Step 4: Simplify right side
    253,843.10x = 48,732,780,062.40
  5. Step 5: Solve for x
    x = 48,732,780,062.40/253,843.10
  6. Step 6: Final answer
    x = 191,979.93

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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.