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Finding the Fourth Proportional to 305,666.80, 458,520.45 and 81,024.10

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Solution

The fourth proportional to 305,666.80, 458,520.45 and 81,024.10 is: 121,541.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,666.80 : 458,520.45 = 81,024.10 : x
  2. Step 2: Convert to fraction form
    305,666.80/458,520.45 = 81,024.10/x
  3. Step 3: Cross multiply
    305,666.80x = 458,520.45 × 81,024.10
  4. Step 4: Simplify right side
    305,666.80x = 37,151,206,792.85
  5. Step 5: Solve for x
    x = 37,151,206,792.85/305,666.80
  6. Step 6: Final answer
    x = 121,541.52

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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.