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Finding the Fourth Proportional to 226,307.28, 312,309 and 130,818

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Solution

The fourth proportional to 226,307.28, 312,309 and 130,818 is: 180,531.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,307.28 : 312,309 = 130,818 : x
  2. Step 2: Convert to fraction form
    226,307.28/312,309 = 130,818/x
  3. Step 3: Cross multiply
    226,307.28x = 312,309 × 130,818
  4. Step 4: Simplify right side
    226,307.28x = 40,855,638,762
  5. Step 5: Solve for x
    x = 40,855,638,762/226,307.28
  6. Step 6: Final answer
    x = 180,531.70

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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.