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Finding the Fourth Proportional to 305,930.20, 458,895.30 and 260,659.30

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Solution

The fourth proportional to 305,930.20, 458,895.30 and 260,659.30 is: 390,988.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,930.20 : 458,895.30 = 260,659.30 : x
  2. Step 2: Convert to fraction form
    305,930.20/458,895.30 = 260,659.30/x
  3. Step 3: Cross multiply
    305,930.20x = 458,895.30 × 260,659.30
  4. Step 4: Simplify right side
    305,930.20x = 119,615,327,671.29
  5. Step 5: Solve for x
    x = 119,615,327,671.29/305,930.20
  6. Step 6: Final answer
    x = 390,988.95

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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.