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Finding the Fourth Proportional to 305,901.20, 458,851.80 and 261,614.45

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Solution

The fourth proportional to 305,901.20, 458,851.80 and 261,614.45 is: 392,421.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,901.20 : 458,851.80 = 261,614.45 : x
  2. Step 2: Convert to fraction form
    305,901.20/458,851.80 = 261,614.45/x
  3. Step 3: Cross multiply
    305,901.20x = 458,851.80 × 261,614.45
  4. Step 4: Simplify right side
    305,901.20x = 120,042,261,288.51
  5. Step 5: Solve for x
    x = 120,042,261,288.51/305,901.20
  6. Step 6: Final answer
    x = 392,421.68

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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.