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Finding the Fourth Proportional to 305,936.20, 458,904.30 and 260,665.30

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Solution

The fourth proportional to 305,936.20, 458,904.30 and 260,665.30 is: 390,997.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,936.20 : 458,904.30 = 260,665.30 : x
  2. Step 2: Convert to fraction form
    305,936.20/458,904.30 = 260,665.30/x
  3. Step 3: Cross multiply
    305,936.20x = 458,904.30 × 260,665.30
  4. Step 4: Simplify right side
    305,936.20x = 119,620,427,030.79
  5. Step 5: Solve for x
    x = 119,620,427,030.79/305,936.20
  6. Step 6: Final answer
    x = 390,997.95

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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.