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Finding the Fourth Proportional to 305,901.45, 458,852.18 and 260,630.55

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Solution

The fourth proportional to 305,901.45, 458,852.18 and 260,630.55 is: 390,945.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,901.45 : 458,852.18 = 260,630.55 : x
  2. Step 2: Convert to fraction form
    305,901.45/458,852.18 = 260,630.55/x
  3. Step 3: Cross multiply
    305,901.45x = 458,852.18 × 260,630.55
  4. Step 4: Simplify right side
    305,901.45x = 119,590,894,738.95
  5. Step 5: Solve for x
    x = 119,590,894,738.95/305,901.45
  6. Step 6: Final answer
    x = 390,945.83

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Similar ratio
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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.