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Finding the Fourth Proportional to 306,076.80, 458,078.40 and 306,076.80

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Solution

The fourth proportional to 306,076.80, 458,078.40 and 306,076.80 is: 458,078.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,076.80 : 458,078.40 = 306,076.80 : x
  2. Step 2: Convert to fraction form
    306,076.80/458,078.40 = 306,076.80/x
  3. Step 3: Cross multiply
    306,076.80x = 458,078.40 × 306,076.80
  4. Step 4: Simplify right side
    306,076.80x = 140,207,170,821.12
  5. Step 5: Solve for x
    x = 140,207,170,821.12/306,076.80
  6. Step 6: Final answer
    x = 458,078.40

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1.5x scale

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.