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Finding the Fourth Proportional to 312,303.78, 430,979.13 and 169,063.71

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Solution

The fourth proportional to 312,303.78, 430,979.13 and 169,063.71 is: 233,307.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,303.78 : 430,979.13 = 169,063.71 : x
  2. Step 2: Convert to fraction form
    312,303.78/430,979.13 = 169,063.71/x
  3. Step 3: Cross multiply
    312,303.78x = 430,979.13 × 169,063.71
  4. Step 4: Simplify right side
    312,303.78x = 72,862,930,650.37
  5. Step 5: Solve for x
    x = 72,862,930,650.37/312,303.78
  6. Step 6: Final answer
    x = 233,307.87

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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.