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Finding the Fourth Proportional to 306,078.40, 459,117.60 and 95,780.80

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Solution

The fourth proportional to 306,078.40, 459,117.60 and 95,780.80 is: 143,671.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,078.40 : 459,117.60 = 95,780.80 : x
  2. Step 2: Convert to fraction form
    306,078.40/459,117.60 = 95,780.80/x
  3. Step 3: Cross multiply
    306,078.40x = 459,117.60 × 95,780.80
  4. Step 4: Simplify right side
    306,078.40x = 43,974,651,022.08
  5. Step 5: Solve for x
    x = 43,974,651,022.08/306,078.40
  6. Step 6: Final answer
    x = 143,671.20

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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.