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Finding the Fourth Proportional to 398,479.71, 597,806.87 and 118,018.83

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Solution

The fourth proportional to 398,479.71, 597,806.87 and 118,018.83 is: 177,054.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,479.71 : 597,806.87 = 118,018.83 : x
  2. Step 2: Convert to fraction form
    398,479.71/597,806.87 = 118,018.83/x
  3. Step 3: Cross multiply
    398,479.71x = 597,806.87 × 118,018.83
  4. Step 4: Simplify right side
    398,479.71x = 70,552,466,773.27
  5. Step 5: Solve for x
    x = 70,552,466,773.27/398,479.71
  6. Step 6: Final answer
    x = 177,054.10

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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.